Eggs (Blightscale Spawn)
Pick up eggs by walking over them and break them deliberately, either by standing in a Spectral Coils soak or by damaging the egg to zero health, so a weakened add spawns. Never let a carried egg touch venom, waves, or finish its cast. On Mythic, eggs are Hardened and apply Noxious Shell, so carriers must stay 3 yards from each other.
Failure: A hatched egg spawns an empowered Blightscale Viper that sprays Putrid Membrane on the whole raid, a stacking Nature DoT that lasts the rest of the fight.
Caustic Waves
Watch which wing Ula'tek raises; that side sends waves first and the far side follows, and in Phase 1 the tail adds its own waves. In Phase 3 the waves are telegraphed by orbs in front of her, so stand where there are no orbs.
Failure: Each wave hits for roughly 917k Nature damage plus a stacking DoT, and any wave that touches an egg instantly hatches it into an empowered add.
Spectral Coils
Stack in the soak circles on both sides of the tail; the hit is split by the number of players within 10 yards of the impact and smashes every carried egg. On Heroic and Mythic, soakers gain Soul Constrictor and must sit out the next set, so run two alternating soak teams.
Failure: An unsoaked coil hits the entire raid for the full 833k Nature damage, and every egg that was not broken lives on to hatch later.
Gore Rattle tank duty
Keep one tank on Ula'tek and one tank on the Gore Rattle tail at all times, and swap targets during each Caustic Waves cast. Stay in melee range of your target, and keep a body inside the Mother's Wrath zone when your tank is marked.
Failure: An untanked tail casts Rattler Slam for about 917k raid-wide Nature damage, an unmeleed boss casts Unchecked Rage on the raid, and an empty Mother's Wrath zone spreads its bites to every player.
Doomscale Egg and Cauldron
In Phase 2, after the Warden dies, each side picks up all small eggs first, then the assigned player grabs the Doomscale Egg. Walk next to the Doomscale Cauldron to throw each egg in; the raid has 90 seconds to pick the big egg up and the carrier has 20 seconds to dunk it. On Heroic and Mythic, disturbing a Doomscale Egg triggers Mass Gestation on all remaining Blightscale Spawn on that side, so clear the small eggs first.
Failure: A Doomscale Egg that hatches releases a Ravenous Doomscale whose 20-second Dread Roar stuns the raid and wipes it.
Serpent's Bite
Three players get a 15-second venom debuff in Phase 3. Helpers stand inside a marked player's circle to leech ticks until the debuff fades harmlessly; marked players can spread for dedicated soakers, or overlap circles so one group soaks several at once. Every leecher gains Volatile Purge and must spread away from other players before it erupts 5 seconds later.
Failure: An unsoaked debuff expires and turns the player into a Calcified Corpse, a stun plus roughly 1M Nature damage per second that pierces immunities, and on Mythic the purge also fires Caustic Waves from the player.
Circling Prey
When Ula'tek casts Circling Prey she destroys the platform she occupies, so evacuate immediately and jump to a surviving platform, then regroup on the platform where she re-emerges.
Failure: Players caught within 13 yards take about 2.5M Nature damage and a knockback, which usually means falling to their death, and stragglers outside still take 208k.
