Siege of Orgrimmar Boss Guide
- Whenever Immerseus reaches 0 health, he splits into P2.
- Each add killed (or healed) in P2 reduces his Energy by 1 (starting from 100).
- When P2 ends, he restores health equal to his Energy percentage, and P1 repeats.
- Reduce his Energy to 0 to defeat him.
Phase 1

Sha Bolt
- Places a puddle on every player every ~10 seconds
- Be at least 5yd spread (whole raid is in 1-2 sections)
- In P2, puddles travel into Immerseus

Swirl
- Dodge the moving waterspouts
- Dodge the boss's rotating breath attack (rotates over 40% of the room)

Swelling Corruption
- Attacking the boss spawns an add AND puts a stacking 6-sec DoT
- Stop attacking when your DoT stack is too high (4+ ?), AoE adds instead
Phase 2

The Split
- Boss splits into adds around the edge of the room
- Spread out to kill the blacks
- Stand on an add as it dies to get +25% damage
- They can be stunned, rooted, slowed, knocked back, etc.

Sha Pool
- The center puddle grows larger in P2
- Standing in the pool deals damage, but reduces its size