Two mounts were added to dungeons on Mythic difficulty in The War Within. However, due to how the seasonal dungeon pool works, these mounts were not farmable for most of the expansion. With the end of The War Within Season 3, you are now able to farm these mounts!
You can farm both mounts every day by doing their respective dungeons on Mythic difficulty. You will initially require a group, but this will become easier over time with the launch of Midnight and future content.
Stonevault Mechsuit Mount From The Stonevault
The first mount that can now be farmed is the 
Stonevault Mechsuit, from the Stonevault dungeon. This mount was originally only obtainable through Season 1 of The War Within. This mount is a little different from other dungeon mounts, as it is not a direct drop from the final boss.
You must first obtain the Malfunctioning Mechsuit from Void Speaker Eirich, the last boss in the dungeon. This starts the quest A Mech in Need, which will then request you to farm three trinkets from The War Within dungeons. You can farm these trinkets in any difficulty, including Follower mode. You will need to deliver the trinkets in the following order:
Overclocked Gear-a-Rang Launcher, from the Master Machinists boss in the Stonevault.
Synergistic Brewterializer, from Goldie Baronbottom in Cinderbrew Meadery. Note: This trinket only drops for Intellect-based specializations, so make sure you’re playing a class that has one. The quest series is Warband-wide, so you can use a second character to collect the trinket.
Burin of the Candle King, from The Candle King in Darkflame Cleft. Note: This trinket only drops for Healing specializations.
Once you have all three trinkets delivered, you will receive your mount!
Wick’s Lead Mount From Darkflame Cleft
The second mount that can now be farmed is 
Wick’s Lead, from the Darkflame Cleft dungeon. This mount was originally only obtainable through Season 2 of The War Within. Unlike the Stonevault Mechsuit, this mount is a direct drop from The Darkness, the final boss in the dungeon.
The War Within has introduced many subterranean-themed mounts. Do you have any of these mounts in your radar? Good luck!
