bastion_of_twilight [Ithilyn's Wiki]

Phase 1 (Valiona on ground)
- Valiona
  - Blackout: stack up at tail, someone Cleanse the debuff when ready
  - Devouring Flames: breath damage, keep an eye what direction she's facing, step to her back
- Theralion
  - Twilight Blast: keep spread out >= 6yds
  - Dazzling Destruction: pink swirly crap on ground, get out
Phase 2 (Theralion on ground)
- Theralion
  - stand with mele/tank, ranged should spread out
  - Engulfing Magic: any damage or healing you do will damage those around you. Either:
    - stand still and do nothing
    - run out away from everyone, then resume heals/dps
  - Fabulous Flames (void zones): targets a ranged player (must be enough ranged)
- Valiona
  - Twilight Meteorite: targets random ranged player, marked with a V chevron, must stack to split damage
  - Deep Breath down the room: “move to side” or “middle”
Links
- http://jinxedthought.blogspot.com/2010/12/valiona-theralion-10-man.html
- http://nonelitistraiding.blogspot.com/2011/03/hints-for-valonia-and-theralion-10.html

Each phase ends when one of the ascendants reaches 25% health. EM has the combined health of all 4, so you want to equally bring them down to 25%

ranged dps
Hydro Lance: must be interrupted
Water Bomb: randomly around the room, if hit, you get Waterlogged and must remove it ASAP by walking through the fire trail left by Ignacius
Heart of Ice: someone occasionally targeted: run to mele pile (attacking Ignacius), giving them a damage boost, then a designated healer should dispel
Glaciate: RUN AWAY! Get rid of Waterlogged!

mele dps
Flame Torrent: channeled, tank use CDs
Inferno Leap & Inferno Rush: leaps to target, then charges back to tank leaving a trail of fire
Burning Blood: someone occasionally targeted: run to ranged pile (people attacking Feludius), giving them a damage boost, then a designated healer should dispel
Aegis of Flame & Rising Flames: all dps switch to burn down shield ASAP, then interrupt Rising Flames massive AoE ticking

ranged dps
Lightning Rod: on random player. RUN AWAY!! chain lightning with long reach
Disperse & Lightning Blast: teleports away and blasts the tank, someone try to get to him to interrupt
Call Winds: everyone tap the tornado to get Swirling Winds debuff, needed to avoid Terrestra's ultimate (Quake)
Thundershock: to survive, need Grounded debuff from Terrastra's Gravity Wells

mele dps
Eruption: avoid these rock spikes
Harden Skin: shield, interrupt cast (1sec) or burn through
Gravity Well: stationary, everyone tap the well to get Grounded debuff, needed to survive Arion's ultimate (Thundershock)
Quake: to survive, need Swirling Winds debuff from Arion's Call Winds

Cryogenic Aura: patches of ice under him, must get him out
Lava Seed: avoid these flare-like valls around the room
Gravity Crush: traps people, doing 96% of their health, plus fall damage, must heal
Electric Instability: chain lightning-like spell, gets worse over time, soft enrage timer

Corrupted Blood
- 25: Accelerated: dispellable
- 50: Sickness: 5yd cone vomit, face away
- 75: Malformation: tentacle shoots shadow bolts
- 100: Absolute: unhealable, 100% more damage, instant cast spells
Phase 1
- Conversion (mind control)
  - Worshipping: Twisted Devotion every 3sec, 10% increased dmg per stack, all 3 must be interrupted
- Fury of Cho'gall: tank swap mech
- Flame's Orders - tank!
  - mele swings gain 20k fire damage, patches of fire around the room, get out
- Shadow's Orders - raid!
  - mele swings do raid damage
  - Pulsing Shadows - use Raid cooldowns!
- Summon Corrupting Adherents (adds)
  - offtank should grab and put next to boss, at 15%, drag to back of room away from raid, leap of faith the tank back, don't be near when killed
  - Corrupting Crash, like Shadow crash
  - Depravity: 20k raid dmg, corruption, must be interrupted 1.5sec cast
  - Sprayed Corrupted: cone, applies Corruption
- Fester Blood: 30sec after add was spawned
  - Festering Blood, massive raid damage
  - 5 Blood of the Old God adds, must be killed before killing raid, snarable
Phase 2 (25% health)
- Fury of Cho'gall: tank swap
- Corruption of the Old God: 5k/sec shadow raid dmg
- Darkened Creations: tentacles, spawn randomly, must be killed ASAP
  - Debilitating Beam, reduces healing by 75%, shadow damage, corruption
  - split raid up into groups to deal with Creations