Me + Richardi + 3-4 Destro locks on Elegon.
Mannoroths Fury Fire and Brim on Orb phase.
Elegon may not even hit any phase and may just stacks to like 14 orbs and die.
I know on 10man Normal I have solod them to 9 stacks with aoe before pillars came up.
No one was helping me kill them around the 7 mark QQ was blowing cd's