Hellfire Guardians attack tanks with Fel Strike, and will use Shield Leap Impact to rush to and damage players at range
After Shield Leap Impact, the Guardian gains Empowered Fel Strike, and tanks should use a CD to survive.
Fel Hellweavers will channel Hellweaving on random players, which healers should dispel. Hellweavingcannot be conventionally interrupted, but stuns, incapacitates, knock-backs, and other similar effects will also break the channel.
Fel Hellweavers also cast Fel Fireball at random targets; and they summon an Orb of Destruction that players should move away from.
Fel Touched Seers will cast Fel Cauterize on their allies, dealing 10% of their life in damage, then healing for 5% of their life each second for up to 8 seconds unless the Fel Cauterize buff is removed.
Seers also cast Fel Lava Beam at tanks, which will chain to up to four additional players, typically the melee DPS.
The Shambling Hulk casts Fel Slam approximately every 20 seconds, creating a line of Fel Geysers in front of him; players within 3 yards of these Geysers will take moderate Fire damage and be knocked back.
Additionally, Shambling Hulk will cast Brutal Shout, dealing raid-wide Physical damage. This ability is used more frequently as the Hulk reaches lower health.
Players should prioritize Fel Touched Seers since these enemies heal their allies, and should be sure to interrupt Fel Cauterize or use offensive dispels to remove it from enemies. The next highest-priority target should be the Shambling Hulk, then Fel Hellweavers, then Hellfire Guardians.
In the Hellfire Passage hallway, players will find all of the above mobs except the Shambling Hulk, and will additionally encounter Iron Peons and Gorebound Assassin.
Iron Peons are fairly harmless, but will occasionally attack random players with Hammer Throw or target the raid with Explosive Crate Impact.
Gorebound Assassins are stealthed, and when a player walks into their range, will de-stealth and use Cheap Shot on the nearest target.
Cheap Shot stuns the targeted player for five seconds, and the Assassin will fixate their melee attacks on that player for the duration of the stun.
Additionally, Assassins will periodically target a random player with Fel Poison, which can be removed by poison-dispelling effects such as Cleanse or Detox.