BCNM status will be voided for anyone who travels up the ramp.
Chainspell will result in Death spam, but it is easy to kite during this as he will attempt to cast even if you are out of range.
Still warps around and spawns with the four Pukhis, which all have Regain.
Strategy
Kiter, DD, Healer: Relies somewhat on luck (need to trigger chainspell just after a warp to avoid wiping). Basically though, DD kills the boss while the kiter (who pops) kites the Pukhis.
It seems Chainspell Stun + Zerg with a kiter might be a faster and safer alternative, but it relies on Angra not using Magic Shield before you start the zerg.
A 2000-3000TP Savage Blade with Naelgling will kill in 1 hit, likely the same for other high damage Weapon skills. Farm TP, pop in WS armor and WS it.