The Bloodbound Horror.

In the dark pits below Nerub-ar Palace, the blood of the Old Gods congeals in foul, black pools. The Bloodbound Horror rises from this vile ooze — drawing everything in its path into The Unseeming.

Movie

Summary

Tank

Black Sepsis stay in range.

Healer

Crimson Rain heal through.

DPS

Gruesome Disgorge go downstairs with your group.

Black Bulwark interrupt & kill adds.

Manifest Horror cc & kill adds.

Spewing Hemorrhage dodge.

Goresplatter run away.

Bloodcurdle spread out.

Grasp From Beyond drop puddles out of group.

Black Blood swimming prohibited.

Bloodlust/Heroism

To be thrown at the boss's engagement.

Heroic Changes

Shortly after sending players downstairs, the boss Spewing Hemorrhage on each side of him that slowly turn counter-clockwise.

The beams are lethal upstairs and downstairs. Move around the boss to dodge them.

Most adds downstairs are static. Maneuver the boss upstairs so that the beams start in a position that doesn't prevent downstairs players from killing the adds.

Mythic Changes

Regularly, all players are marked with a circle that explodes, dealing heavy damage to anyone nearby. Spread out and stop moving.

Abilities

Black Sepsis

Black Sepsis - If no tanks are in range, the boss deals massive raid-wide damage.

stay in range

Crimson Rain

Crimson Rain - Raid-wide healing absorption.

heal through

Black Blood

Black Blood - Players who go swimming in the blood take massive damage.

swimming prohibited

Mechanics

Support TacticalAirHorse

Goresplatter

Goresplatter - At 100 Energy (after the 2nd group comes back up), the boss casts a massive 60y explosion that applies a 10s raid-wide DoT and kills players who are hit by the explosion.Run away and don't stand in the Black Blood.After each Goresplatter, the boss summons one additional Harbinger add downstairs and also deals Seeping Transfusion.

run!

Support TacticalAirHorse

Grasp From Beyond

Grasp From Beyond - Several players upstairs are marked by arrows for 12s and drop multiple puddles that explode shortly after.Drop them out of the group and close to one another to preserve space.

drop puddles away from the group and close to one another.

Support TacticalAirHorse

Gruesome Disgorge

Gruesome Disgorge - The boss exhales a massive frontal cone. Players hit take heavy damage and are sent "downstairs" to the add dimension for 40s.You cannot go downstairs twice in a row; Unseeming Blight.Set up 2 balanced groups, each alternating going downstairs. Adds are summoned shortly before each breath.There are 2 different types of adds downstairs.

get hit by breath when it's your group's turn and kill the adds

Manifest Horror

Manifest Horror - Downstairs - Forgotten Harbinger addMore Harbingers spawn the longer the fight goes on. They are static and only Manifest Horror that walk toward the boss.If they reach the boss, Blood Pact. Slow, knockback, and kill them before they do.

don't let small adds reach the boss. kill all adds.

Support TacticalAirHorse

Spewing Hemorrhage

Spewing Hemorrhage - After Gruesome Disgorge, the boss fires 2 massive beams from each side of him that then slowly rotate counter-clockwise for 20s.The beams kill all players regardless of the dimension they're in.Active tank should maneuver the boss so the beams start in a position that doesn't prevent the downstairs group from reaching and killing the adds.

maneuver boss so beams don't affect downstairs group. dodge the beams!

Support TacticalAirHorse

Black Bulwark

Black Bulwark - Downstairs - Lost Watcher addThere is always 1 Watcher. Drag it near the Harbingers for cleave.Interrupt the Watcher's cast or it Black Bulwark onto the boss.You have 40s to kill all the adds before being sent back up.

interrupt the mobile add before it starts channeling. your tank can do it.

Bloodcurdle

https://www.wowhead.com/en/spell=452237 - All players are marked with a small circle and explode after 5s. Don't stack on top of each other.

spread

Tips

Video

Summary

Tank

Black Sepsis stay in range.

Healer

Crimson Rain heal through.

DPS

Gruesome Disgorge go downstairs with your group.

Black Bulwark interrupt & kill adds.

Manifest Horror cc & kill adds.

Spewing Hemorrhage dodge.

Goresplatter run away.

Bloodcurdle spread out.

Grasp From Beyond drop puddles out of group.

Black Blood swimming prohibited.

Bloodlust/Heroism

To be thrown at the boss's engagement.

Heroic Changes

Shortly after sending players downstairs, the boss Spewing Hemorrhage on each side of him that slowly turn counter-clockwise.

The beams are lethal upstairs and downstairs. Move around the boss to dodge them.

Most adds downstairs are static. Maneuver the boss upstairs so that the beams start in a position that doesn't prevent downstairs players from killing the adds.

Mythic Changes

Regularly, all players are marked with a circle that explodes, dealing heavy damage to anyone nearby. Spread out and stop moving.