Any high damage poison immune works. I personally used CMM, but I have a friend who’s going to use Dragon Man and others have used Hyperion. Can we see your roster?
I'm not sure of the nodes around the boss, but could Claire make an option?She is immune to poison(when in Curse of plague) and she hits pretty hard too. I personally use my rank 4 quite a lot, she did well for the immortal abomination for me at the event quest some months back. But I had Hyperion for the back-up.If power control is a problem, Claire partly manages that too.
I am gonna go for it 2 days from now . I recently pulled Angela from basic and already had Heimdall . And i am going to use Rhulk for him .. With Angela's fury he is gonna hit like a bullet train . Heard you also get incinerate agst Sinister so i am convered with Rhulk.