In Season 15, players confront the Prime Evils and wield their powers through Splinters of Evil. Each Prime Evil grants different powers and modifies different endgame activities by granting bonus effects to War Plans. These effects are unlocked through the Reputation track for each Splinter.
- Diablo’s Splinter of Terror modifies Helltide and Infernal Hordes
- Baal’s Splinter of Destruction modifies The Undercity and Lair Bosses
- Mephisto’s Splinter of Hatred modifies The Pit and Nightmare Dungeons
- All three modify the Tree of Whispers
Choosing which Prime Evil’s power you want to wield can alter both your gameplay and content, so let’s take a look at how each War Plan node is affected.
Tree of Whispers
- Corrupted Roots – Modified by Splinter of Terror at rank 8.
- Corrupted Roots appear more often in Whisper Caches.
- Roots of Power – Modified by Splinter of Terror at rank 22.
- Monster Power increased by +1 more, and planting Corrupted Roots in Helltides yields a large amount of Aberrant Cinders.
- Wisdom of Whispers – Modified by Splinter of Hatred at rank 5.
- Completing Whispers grants Experience Orbs.
- Resplendent Favor – Modified by Splinter of Hatred at rank 22.
- Whisper Caches have a chance to drop 2 Resplendent Sparks instead of 1.
- Grim Retribution – Modified by Splinter of Destruction at rank 5.
- Whisper Ambushers trigger more often.
- Colossal Foe – Modified by Splinter of Destruction at rank 22.
- Boss Ambushes have +2 Monster Power and drop Superior Lair Keys.
Nightmare Dungeons
- Waking Spoils – Modified by Splinter of Hatred at rank 4.
- 50% chance to spawn a second War’s Bounty Chest.
- Dread Revival – Modified by Splinter of Hatred at rank 8.
- Bosses have a higher chance to revive and gain +1 Monster Power.
- Horadric Hunter – Modified by Splinter of Hatred at rank 12.
- Killing any Elite in a Nightmare Dungeon has a chance to reveal a Horadric Altar.
Helltide
- Wretched Vermin – Modified by Splinter of Terror at rank 4.
- Demonic Rats are always Elite and drop more cinders.
- Hellmouth – Modified by Splinter of Terror at rank 12.
- Hellwyrms have a chance to summon a Butcher.
- Tainted Shrines – Modified by Splinter of Terror at rank 18.
- Shrine Effects in Helltide last 15 seconds longer and grant 50% increased Movement Speed.
Undercity
- Jade Epiphany – Modified by Splinter of Destruction at rank 4.
- You gain 50% more Experience Orbs, and Monster Power is increased by +1 more.
- Endless Swarm – Modified by Splinter of Destruction at rank 8.
- An Invasion Portal appears at the start of each floor.
- Last Gasp – Modified by Splinter of Destruction at rank 12.
- Double time is earned at 15 seconds or less instead of 5.
Lair Bosses
- Lair of Runes – Modified by Splinter of Destruction at rank 14.
- Lair Bosses drop additional Runes.
- Two by Two – Modified by Splinter of Destruction at rank 18.
- Increased chance for the Nemesis Lair portal to appear.
- Exotic Armory – Modified by Splinter of Destruction at rank 20.
- Hoard Chests drop an additional 3 Unique items for any class.
Infernal hordes
- Cult of Annihilation – Modified by Splinter of Terror at rank 5.
- A Doomsayer appears at the start of each wave.
- Impending Doom – Modified by Splinter of Terror at rank 14.
- Impending Doom triggers at 30 seconds remaining instead of 10.
- Council Coffers – Modified by Splinter of Terror at rank 20.
- The Chest of Talismans now costs 1 Aether.
The Pit
- Choron’s Wage – Modified by Splinter of Hatred at rank 14.
- Gain 50% more Artificer’s Stones.
- Choron’s Haste – Modified by Splinter of Hatred at rank 18.
- Gain +1 additional Glyph Upgrade Chance for every 5 minutes remaining.
- Choron’s Blessing – Modified by Splinter of Hatred at rank 20.
- Your Glyph Upgrade Chance is increased as if you completed 10 tiers higher.




