The devourers consume anima wherever they can find it. With drought afflicting the Shadowlands, it is no surprise that the hungriest and most dangerous of the devourers is drawn to the abundant store of anima here in the depths of Castle Nathria.
This is a single phase encounter with a single boss. There are a lot of positional requirements where the raid will need to flex and adapt to the mechanics as they come.
Growing Hunger - This is the primary tank mechanic of the fight. Every melee hit the boss will leech health and gain a stack of Growing Hunger which increases the power of the leech effect by 8% per stack. The stack resets when the boss hits a new target.
Overwhelm - Large Physical damage hit on a set timer. Ensure you have mitigation active and/or a cooldown for this.
Gluttonous Miasma - This debuff will be applied to several non-tank players every 24 seconds. The debuff is 24 seconds duration so will always be present during the encounter. Players with the debuff will be immune to healing, take a small amount of ticking damage (as well as the raid wide damage) and leech health from all players within 5 yards of them. A buddy system is required to counter this mechanic to ensure that these players do not die, you will want at least 2 other players to feed their health into the debuffed raid member.
Volatile Ejection - 3 players will be marked and a line will be shot at each of them. Anyone in that line will take a moderate amount of Shadow damage and receive a debuff increasing their damage taken by Volatile Ejection by 500% for 35 seconds. However, this ability is cast every ~30 seconds so if you get hit by one accidentally and are then marked with one you will likely die. It is important to note that the width of the lines are wide so you will need to be careful in melee.
Expunge - All players will have an Expunge circle around them and after 5 seconds a moderate amount of Shadow damage will be dealt to all players within the circle. The size of the circle is based on the players missing health.
[Heroic]Obliterating Rift - Whenever an Expunge debuff expires an Obliterating Rift orb will now spawn at that location. These orbs are permanent and can be removed from the encounter space by running into them, however this will deal a large amount of Shadow damage. Players with immunities can soak these, however they can also be ignored as long as there is space to run away from the boss for Consume.
Consume - When the boss is on full energy Consume will be cast. This is an 8 second long cast where health will be leeched from the raid to the boss. The closer you are to the boss, the more health is leeched. You should aim to move the boss to an edge of the room prior to this ability to allow the raid to get a larger distance from the boss to minimise the leech.