Shadow Priest DPS Spell List and Glossary — Dragonflight 10.0.7

If you are new to Shadow, this is a great place to start to get an understanding of how the spec works. On this page we will discuss what abilities you have, what they are used for within the specialization, how they interact with each other and also with important cooldowns. If you already have experience with Shadow and are comfortable with it in the current expansion, it is recommended you skip this section and move on to the rest of the guide.

Insanity is your primary resource as a Shadow Priest. All of our offensive abilities generate Insanity. The goal is to generate insanity and then spend it on either Devouring Plague (50 insanity) or Mind Sear (50 insanity at least, 25 per tick) if talented. It is very important to use these spender abilities before you cap on insanity, otherwise, you will be wasting damage. It is okay to refresh Devouring Plague while it is already active, it adds the damage from the existing DoT to the new DoT whenever you refresh it!

Mana is your secondary resource as a Shadow Priest. Most of our utility spells cost Mana to use, though managing Mana attentively is generally not required.

For the abilities below you might see an included acronym or commonly used short-hand name to refer to that spell. This guide will otherwise avoid using this terminology in most places, but you might find them used in the class discord or elsewhere.

Note that this page simply lists all the different abilities, assuming you are at max level. If you are leveling, check out our dedicated Priest Leveling page, which has detailed information on when you unlock all of these abilities.

These are your core skills that are available regardless of talents and form the core gameplay of the specialization.

For more information on how to use these abilities together in your rotation, please read our rotation page.

Ability	Abbreviation	Description/Effect
Shadowform	SF	Default form that you will always want to have active as it is just a simple 10% damage buff. It is important to note that when in Voidform this goes away but will come back after you exit Voidform
Shadow Word: Pain	SWP	One of your two main DoT spells. It deals Shadow damage to the target over time, and generates Insanity on the application.
Vampiric Touch	VT	Your other main DoT spell. It deals Shadow damage to the target over time, heals you for 50% of the damage dealt and generates Insanity on application.
Mind Blast	MB	Deals damage to a single target, which has a 9-second cooldown, affected by Haste and generates a high amount of Insanity. It is generally one of your highest-priority spells. You also gain an extra charge of this ability when you have Shadowy Insight talent selected.
Mind Flay	MF	Channeled spell that deals Shadow damage to the target and slows their movement speed by 50%. It generates Insanity, and has no cooldown, and is used as a filler throughout your rotation.
Mastery: Shadow Weaving	-	Our Mastery spell that emphasizes having DoTs up on as many targets as possible. Depending on your Mastery rating, you deal (4.0% + gear rating) increased damage to targets for each of your three DoTs active. So if you have 0 mastery rating from gear, you will do a 4% increase in damage per DoT on the target, so all three DoTs would be a 12% increase to your damage. This is calculated per target, so spreading DoTs is very valuable, but only works with Shadow Word: Pain, Vampiric Touch, and Devouring Plague for the DoT increase check. Note that this does not always work for every part of our kit, specifically pet damage, where it is on a case-by-case basis.
Focused Will	FW	This is a passive ability, which causes melee abilities and attacks to reduce all damage you take by 15% for 8 seconds. This gives you some passive defense which is very welcome.
Power Word: Fortitude	PWF	Group buff available to all Priests that gives everyone in your party 5% Stamina for 1 hour. This is an exclusive buffs just to Priests, there are no scrolls from Inscription to give you this buff, so this is a very strong piece of utility we bring to groups.
Mind Vision	-	Simple spell with very limited use, but it can be occasionally helpful to see far ahead if you know the name of a mob you want to target.
Mind Soothe	-	This spell has been slightly updated in Dragonflight. It is a unique ability that applies a buff to enemies in a 10-yard range that makes their aggro range significantly reduced. This has a short cooldown but can be used to skip past mobs while leveling or even inside of dungeons.
Desperate Prayer	-	Self-heal spell and defensive that provides a good chunk of on-demand healing on a 1.5-minute cooldown. Adding this to our defensive toolkit makes us one of the best defensive ranged DPS specs out there.
Fade	-	Powerful aggro-drop ability that can come in handy if you accidentally pull threat on something, and also gives you reduced aggro radius. When paired up with Mind Soothe in solo content you can walk past almost any mob in the game without causing them to aggro you.
Psychic Scream	-	Fears up to 5 enemies within 8 yards for 8 seconds on a 1-minute cooldown. Primarily useful to get enemies off you when you are alone.
Flash Heal	FG	This has replaced Shadow Mend for us in this expansion and is our main healing spell in our kit. This is castable in Shadowform but generally is less effective than Shadow Mend was, but at a lower mana cost.
Power Word: Shield	PWS	Allows you to shield a friendly target. This is primarily used on yourself when you need to mitigate damage, but can also be used on other friendly targets.
Hallucinations	-	Passive ability that grants you 4 Insanity on successful Dispel Magic, Mass Dispel, Purify Disease, Vampiric Embrace, and Power Word: Shield casts. This reduces the penalty of having to spend globals on utility spells, as you do not lose any Insanity generation in the process.

The following abilities are granted by taking those specific nodes in our Class Talent tree.

Ability	Abbreviation	Description/Effect
Renew	-	Base heal over time spell for Priests. While this does have little few uses for Shadow it is castable in Shadowform so is an option if you want more off healing.
Dispel Magic	-	Removes a beneficial Magic effect from an enemy each time you cast it. Very useful tool next to Mass Dispel, particularly in dungeons.
Shadowfiend	SF/Fiend	3-minute cooldown which summons a shadowy fiend that attacks your target for 15 seconds. It is an offensive cooldown that is not particularly strong. Ideally, it should be paired with high Haste buffs or right before Voidform as getting more Haste means more melees so more insanity gained.
Prayer of Mending	PoM	Healing spell available to all Priests that can be more passive off-healing in your kit. Spells like this can come in handy during encounters that have downtime where you cannot DPS but where off healing your group is helpful.
Purify Disease	-	Removes all Disease effects from friendly targets. This is generally niche in its use but sees use in dungeons from time to time which still makes it a valuable addition.
Shadow Word: Death	SWD	Baseline execute ability, that deals a moderate amount of damage, and even more damage if used on a target with less than 20% health. This should generally only be used in that execute window, but is also great to use as an instant cast ability while on the move. Just be careful about using it, it does deal a reasonable chunk of your health when used without Tithe Evasion, especially if it critically strikes!
Holy Nova	-	AoE skill available in our tree but does not scale or interact with our kit. It is just a spammable AoE ability that will likely not be used much as a Shadow Priest.
Angelic Feather	AF	Spell available to all Priests now and will compliment Body and Soul as another movement skill as a Shadow Priest. While you still can get Body and Soul, Angelic Feather lasts longer and will likely be more commonly used when you do not need the shield.
Leap of Faith	LoF	Pulls a friendly party or raid member toward you. It has a 1.5-minute cooldown. This is a niche skill that can help get a group member out of an otherwise deadly situation.
Shackle Undead	-	Allows you to prevent an Undead target from taking any actions for 50 seconds. This effect breaks upon any damage.
Void Tendrils	-	Another 5-target crowd control ability Priests get access to. These tendrils require you to be in melee range of your targets similarly to Psychic Scream, but instead, root enemies in place for 20 seconds or until enough damage is dealt to break the tendrils.
Mind Control	MC	allows you to take control of an enemy target for 30 seconds. This does not work on Demonic, Mechanical or Undead targets. While channeling this you cannot control your character.
Dominate Mind	-	Alternative choice to Mind Control which is a Mind Control-like spell that instead makes the valid target a pet that is fully under your control for 30 seconds on a 30 seconds cooldown. That means if you are good at refreshing this you can maintain the pet with near full uptime.
Mass Dispel	MD	removes all harmful Magic effects on up to 5 allies, and 1 beneficial Magic effect on up to 5 enemies on a 45-second cooldown. This is situationally very useful, particularly in dungeons. It does cost a lot of mana and has a fairly lengthy cooldown, however. It can also dispel certain types of Magic that are normally not dispellable.
Power Infusion	PI	Haste-based cooldown spell that allows you to give an ally (or yourself) a 25% Haste buff for 20 seconds. While under normal circumstances you would cast this solely on yourself, with the talent directly below Twins of the Sun Priestess we will almost always be casting Power Infusion on another ally every 2 minutes.
Vampiric Embrace	VE	Heals allies based on 50% of the single-target damage you do for 15 seconds, on a 2-minute cooldown. This is particularly useful in solo or up to 5-man content, but can also be useful for raids when used at the right time.
Divine Star	DStar	Short ranged ability that gives the Priest a combo damage and healing spell. For optimal use, you want to be within 24 yards of your targets so that the star hits each target twice for optimal damage and healing. This spell generates 6 Insanity.
Halo	-	Similar spell compared to Divine Star that is a slightly larger range that has more use cases in raiding environments. Note that this spell ONLY hits targets that are actively in combat so that you do not ninja-pull anything in Mythic+. This spell generates 10 Insanity.
Mindgames	MG	Returning Covenant ability that is now a Class talent ability. This is more or less the same as it was in Shadowlands and is relatively short cooldown nuke ability. It has interesting interactions with reversing actions on the target you cast it on, acting as a pseudo-defensive/absorb on the target and/or reversing healing done by the target as damage instead. The reversal mechanic is relatively niche but can be useful. This spell generates 10 Insanity.
Power Word: Life	PWL	Powerful new healing ability that gives a large bonus if the target is below 20% health. This is a great piece of off healing and something to consider if you want to provide more utility for your group.
Void Shift	VS	Returning PvP talent now available in our class talent tree. This can be used to quickly save a life whether it is yours or someone else in your group.

Ability	Abbreviation	Description/Effect
Improved Flash Heal	-	Small healing increase to Flash Heal
Psychic Voice	-	Small reduction in the cooldown of Psychic Link
Petrifying Scream	-	Changes Psychic Scream to tremble in place instead of fearing them away.
Focused Mending	-	Buff to the initial healing of Prayer of Mending. Since we do not cast this much you are unlikely to invest points in this side of the tree.
Protective Light	-	extra defensive talent that gives us a 10% reduction after casting Flash Heal. With how easily cast Flash Heal is this can be a very powerful talent if you can afford to cast the spell before a damage event.
From Darkness Comes Light	-	Choice against Protective Light and shines in any situation you would not want the defensive capability and instead, opt for the increased healing from occasional Flash Heal casts.
Phantasm	-	Gives an extra effect to Fade letting it also remove snare effects. Paired with Improved Fade you could remove snares every 20 seconds!
Death and Madness	DaM	Slightly reworked from Shadowlands and now only resets its cooldown every 20 seconds, but resets when used on a target below 20% health. You do still get some Insanity when a target dies, but the use cases feel a bit limited. It will mean in raid fights or single-target it will feel as if you have 2 charges of Shadow Word: Death below 20% health.
Spell Warding	-	Simply reduces damage taken from magic abilities by 3%. This is pretty small but could be a useful thing to pick up in heavy magic damage fights.
Blessed Recovery	-	Talent that feels oriented to PvP gameplay and will likely not see much use in PvE. It requires you to be critically struck by an attack which does not happen often outside of PvP.
Rhapsody	-	Gives a stacking damage buff to Holy Nova. Pending tuning this could become relevant but likely not something Shadow is interested in.
Sheer Terror	-	Reduces the amount of damage a target can take before Psychic Scream will break. Since this is only 75% it will likely only be useful in solo encounters or PvP.
Words of the Pious	-	Another non-Shadow based talent that increases damage of Smite and damage and healing of Holy Nova for a short time after pressing Power Word: Shield.
Move with Grace	-	Simply reduces the cooldown of Leap of Faith by 30 seconds to make it a flat 1-minute cooldown.
Sanguine Teachings	-	Gives you an extra 3% leech.
Tithe Evasion	-	Reduces the damage taken from Shadow Word: Death by 75%. This is a great addition to Shadow's kit, especially when running talents like Inescapable Torment, Pain of Death, or Deathspeaker which will have you casting Shadow Word: Death more than you would otherwise.
Inspiration	-	Relatively inconsequential talent for Shadow considering how little we will press Flash Heal, and generally follows the trend of talents on the far left not making sense for Shadow.
Improved Mass Dispel	-	Reduces the cooldown of Mass Dispel by 20 seconds down to 25 seconds and makes it close to an instant cast.
Body and Soul	BaS or BnS	Our second movement ability in the tree gives you a small burst of movement speed after casting Power Word: Shield. Also works on a target you cast this on with either Power Word: Shield or Leap of Faith.
Twins of the Sun Priestess	Twins	Massive utility spell in our talent tree that can be a large DPS gain for your group. With this talent, you will want to always try and cast Power Infusion on another friendly target whenever possible.
Void Shield	VS	Allows you to refill part of your active Power Word: Shield with your damaging spells. Note that this does not refresh your Power Word: Shield so does not seem super useful.
San'layn	SL	Buffs Vampiric Embrace by 25% and reduces its cooldown down to 75 seconds. Note that this is significantly worse in Dragonflight compared to live with Vampiric Embrace only being base 50% rather than 85%. This buffs Vampiric Embrace to 62% in Dragonflight. If you instead have Sanguine Teachings this will add an additional 2% leech for a total of 5%.
Apathy	-	Gives your Mind Blast critical strikes a 75% slow for 4 seconds, having good synergy with talents like Mind Melt.
Unwavering Will	-	Reduces the cast time of Flash Heal while above 75% health.
Twist of Fate	ToF	Has been slightly buffed in Dragonflight, now proccing from damage OR healing spells for Shadow. This means we can potentially have more uptime on this buff from healing spells like Halo. Currently gives you a 10% damage buff when you proc this, making it one of our execute talents.
Throes of Pain	-	Adds in passive Insanity when targets die with your Shadow Word: Pain in addition to buffing its damage. This lets you start each subsequent pack in Mythic+ with a good chunk of Insanity and smooths transitions.
Angel's Mercy	-	Gives you cooldown reduction to Desperate Prayer when taking damage, giving you more chance to use Desperate Prayer in encounters with lots of damage taken.
Binding Heals	-	Decent talent choice for anyone that intends on doing a lot of Flash Heal off healing, where those will also heal you for 20% of the amount when used on allies.
Translucent Image	-	Makes Fade an instant cast 10% defensive button, making it one of the few in our kit.
Surge of Light	SoL	Gives your healing spells and Smite a small chance to give you a free instant cast Flash Heal. Since we do not cast either of these spells often you are not likely to get many of these procs as Shadow without actively healing.
Light's Inspiration	-	Buffs Desperate Prayer from 25% max health gain up to 40%, giving us a pretty large chunk of health when used. Very good synergy with Angel's Mercy.
Crystalline Reflection	CR	Adds a small instant heal to Power Word: Shield and causes some of that damage to reflect to your attacker. This works with raid boss mechanics that are dealt directly by those targets so could be a nice thing to have in a fight with lots of raid damage.
Improved Fade	-	Reduces the cooldown on Fade.
Manipulation	-	Causes your Mind Blast, Mind Flay, and Mind Spike casts to reduce the cooldown of Mindgames.
Angelic Bulwark	AB	Cheat-death-like shield that procs when you fall below 30% HP. The shield is only 15% of your max health though, so unsure how useful this will be.
Shattered Perceptions	SP	Gives each component of Mindgames buffs including damage, reversal amount, and debuff duration.

Ability	Abbreviation	Description/Effect
Devouring Plague	DP	Deals an extremely large amount of damage and is our single target insanity spender. The entire spec basically revolves around building up insanity and then spending it on Devouring Plague. Due to our Mastery, we want to make sure we keep this DoT up as long as possible, but we also do not want to cap insanity. Because of this problem, Blizzard has made the spell roll damage over. This means that if you cast Devouring Plague while you already have Devouring Plague ticking, it will carry the old damage over as a modifier to the new Devouring Plague's ticks so you do not lose damage. So you should play the same since nothing snapshots, but if you are overcapping insanity make sure you keep casting Devouring Plague, you will not lose any damage doing so!
Dispersion	Disp	Your main defensive spell as Shadow, reducing all damage taken by 75% but also preventing you from casting any spells for its so increases your movement speed by 50% and makes you immune to movement-impairing effects.
Silence	-	Allows you to prevent a target from casting for 4 seconds on a 45-second cooldown. If the target is immune to silence effects, it also works as a standard interrupt if you use it on a target while it is casting.
Dark Void	DV	An AoE ability on a 30-second cooldown that does some light damage to all targets in range and applying Shadow Word: Pain to 16 enemies.
Psychic Horror	PH	4-second single target stun on a 45-second cooldown.
Mind Sear	MS	channeled insanity spender that deals Shadow damage to your target and all other targets within 10 yards. You must have 50 insanity to begin a channel and each tick consumes 25 insanity. Generally speaking, this is used over Devouring Plague whenever facing multiple stacked enemies.
Mind Spike	MS/Spike	Filler spell that effectively replaces Mind Flay as a casted version depending on talents. Exact use cases for when to use this vs. Mind Flay are not very obvious but it can be a playstyle choice.
Void Eruption	VoiEr/VF	Causes you to enter Voidform. Void Eruption also deals a big burst of damage to all enemies within 10 yards of your target and grants you an extra charge of Mind Blast while also resetting its cooldown. This effect lasts a minimum of 15 seconds and is extended based on Insanity spent.
Void Bolt	VB	Ability that replaces Void Eruption while Voidform is active. It is instant cast and it deals damage to the target, adding 3 seconds to the existing durations of Shadow Word: Pain and Vampiric Touch to the target and all nearby targets, on top of also generating Insanity. This is generally one of the more important spells for Shadow when in Voidform and is ideally cast on cooldown, but make sure you do not overcap on insanity with this ability.
Dark Ascension	DA	The alternative cooldown option is on a brief 1-minute cooldown. Activating this gives you 30 insanity while also buffing the damage of non-periodic spells by 25%.
Shadow Crash	SC	Fixed 30-second cooldown uncapped AoE spell that applies Vampiric Touch on up to 8 enemies that it hits. This also works when talented with Misery to get Shadow Word: Pain on any targets that get Vampiric Touch. This proc also prefers targets without active Vampiric Touch DoTs. Note that this does not proc or consume Unfurling Darkness.
Mindbender	Bender	Replaces Shadowfiend to be a 1 minute spawned pet instead. The actual damage and insanity remain the same, you just get to press it more often.
Damnation	-	Applies Shadow Word: Pain, Vampiric Touch, and Devouring Plague on a base 1-minute cooldown (reduced by up to 30 seconds with Malediction). This spell generates 7 insanity from casting your two DoTs and can proc Unfurling Darkness but not consume it.
Void Torrent	VoiT	Large single target channel that generates 60 Insanity on a base 60-second cooldown (reduced by up to 30 seconds with Malediction).

Ability	Abbreviation	Description/Effect
Shadowy Apparitions	SA	Works directly with casts of Mind Blast, Devouring Plague, or Void Bolt to spawn a Shadowy Apparition that float towards any targets that have Vampiric Touch currently ticking. You also have a 50% chance per Mind Sear tick to spawn an apparition. If the base ability for this critically strikes the apparition will do double damage instead.
Intangibility	-	Makes your Dispersion heal for more and also reduce its cooldown by 30 seconds down to 90 seconds.
Mental Fortitude	-	Lets your overhealing done by Vampiric Touch or Devouring Plague build up a shield on your character.
Misery	-	Causes your Vampiric Touch to also apply Shadow Word: Pain. In addition, it also makes Shadow Word: Pain last an extra 5 seconds, causing it to line up perfectly with Vampiric Touch.
Last Word	LW	Reduces the cooldown of Silence by 15 seconds.
Coalescing Shadows	CS/Shadow Orbs	Adds a new proc to the kit. It gives your Mind Sear, Shadow Word: Pain, and Mind Flay a chance to give you a stack. Casting Mind Blast or Mind Spike will consume all stacks to deal 10% more damage per stack. When consuming your stacks you get a buff that increases the damage of periodic spells by 10% for 15 seconds.
Puppet Master	PM	Gives each melee swing of Shadowfiend or Mindbender a proc of Coalescing Shadows and adds a percent chance for your Shadowy Apparitions to get a proc as well.
Mental Decay	-	Causes ticks of Mind Flay and Mind Sear to extend Shadow Word: Pain and Vampiric Touch by 1 second.
Unfurling Darkness	UD	Causes your Vampiric Touch casts to add a damage hit for your next cast of Vampiric Touch. This buff lasts 8 seconds, meaning you need to cast Vampiric Touch within 8 seconds of the first cast to get the damage. This effect has a 15-second cooldown.
Surge of Darkness	SoD	Gives your Vampiric Touch and Devouring Plague damage a chance to cause your next Mind Spike to be instant cast and deal 200% more damage. This can stack up to three times and can be very helpful for movement.
Harnessed Shadows	-	Gives more chances to get a Coalescing Shadows from Mind Sear, Shadow Word: Pain, and Mind Flay. In addition gives you a proc whenever critically hit by an attack.
Shadowy Insight	SI	Passively gives you 1 extra charge of Mind Blast as well as giving Shadow Word: Pain a chance to give you a Shadowy Insight proc. This proc gives you a free charge of Mind Blast and makes your next cast instant. This proc does not scale with the number of ticks you get of Shadow Word: Pain, so more DoTs out does not give you more procs on average.
Ancient Madness	AM	Gives either Void Eruption or Dark Ascension a decaying Critical Strike buff after activating the cooldown.
Mind Melt	MM	Stacking buff that makes your Mind Spike casts increase the critical strike chance of your next Mind Blast by 25% and reducing its cast time by 50%. You can stack this twice to make your next Mind Blast have an extra 50% chance to critically strike and be instant cast.
Maddening Touch	MT	Gives your Vampiric Touch damage a chance to give you 1 Insanity.
Dark Evangelism	-	Makes your Mind Flay, Mind Sear, and Void Torrent trigger a stacking buff that increases your periodic Shadow effects by 1%/2%, stacking up to 5 times.
Auspicious Spirits	-	Causes your Shadowy Apparitions to deal more damage and generate Insanity.
Tormented Spirits	TS	Gives your Shadow Word: Pain damage a chance to spawn a Shadowy Apparitions on all targets with your Vampiric Touch. Critical strikes of pain have twice as much chance to spawn an apparition.
Psychic Link	PL	Causes your Mind Blast, Mind Flay, Void Bolt, Mindgames, Void Torrent, and Mind Spike to deal a percent of the damage done to all other targets afflicted by your Vampiric Touch.
Whispers of the Damned	WotD	Grants your critical strikes from Mind Blast and Mind Spike give you additional Insanity.
Deathspeaker	Zeks	Gives your Shadow Word: Pain a chance to reset the cooldown on Shadow Word: Death and make the next cast act as if the target was below 20% to deal more damage.
Mind Flay: Insanity	MFI	Causes Devouring Plague to transform your Mind Flay into Mind Flay: Insanity. Casting Mind Flay: Insanity consumes the buff and deals more damage, generates more insanity, slows the target more, and channels faster compared to Mind Flay.
Encroaching Shadows	ES	Buffs the initial damage of Devouring Plague (which is buffed by Dark Ascension) and the damage of Mind Sear by 20%.
Inescapable Torment	IT/SFP	Returning Shadowlands legendary Shadowflame Prism as a talent. This causes your Mind Blast and Shadow Word: Death casts during Mindbender to make your pet teleport behind that current target and deal AoE damage to 5 targets and increase the duration of Mindbender.
Screams of the Void	SotV	Causes Mind Flay to increase the tick rate of your active Shadow Word: Pain and Vampiric Touch on that target. If you are channeling Mind Sear it causes those DoTs to tick faster on ANY target, regardless if it is being hit by Mind Sear.
Pain of Death	PoD	Similar effect to Psychic Link that buffs Shadow Word: Death and causes it to deal reduced damage to all other targets affected by your Shadow Word: Pain.
Mind Devourer	MD (shares with Mass Dispel)	Causes your Mind Blasts to have a chance to proc Mind Devourer. This causes your next Devouring Plague or full channeled Mind Sear to cost no Insanity.
Insidious Ire	II/Talbs	Buffs your Mind Blast whenever you have Shadow Word: Pain, Vampiric Touch, and Devouring Plague all active on the same target. You get this benefit on Mind Blast regardless if that is the target you have all your DoTs active on.
Malediction	-	Reduces the cooldown of Damnation or Void Torrent.
Idol of Y'Shaarj	IoY/YShaarj	Causes you to gain an extra effect when you summon your Mindbender. If your target has more than 80% health, you and your pet gain 5% more damage. If the target is enraged it dispels the effect and increases your haste by 5%. If your target is stunned you gain 5 insanity per second. If your target is feared you and your pet deal 15% increased damage and either damage will not break that fear. If none of these conditions are met your Mindbender will last 5 more seconds. Aside from the default case these effects are extended with Inescapable Torment.
Idol of C'Thun	IoC/Cthun	Gives your Mind Flay ticks have a chance to spawn a Void Tendril that deals single target damage and your Mind Sear ticks have a chance to spawn a Void Lasher that deals AoE damage. Both of these pets give you the same insanity per second.
Idol of Yogg-Saron	IoYS/Yogg	Spawns a Thing From Beyond after conjuring 25 Shadowy Apparitions. When the pet spawns it continually casts Void Spike to deal a large amount of single-target damage at your current target and small cleave to targets around that one.
Idol of N'Zoth	IoN/NZoth	Gives Shadow Word: Pain, Vampiric Touch, and Devouring Plague a chance to apply a stack of Echoing Void on that target. Each time a stack is applied you have another chance to collapse those stacks. When the stacks collapse each stack explodes for AoE damage every 1 second until no more stacks remain. All stacks will explode should the target die with stacks still active.