Which 5* to R4 for my roster?

Sfaku

Who do you think would be the best addition to my roster?

My main team are Corvus 5/65, Domino 4/55, X23 4/55 duped, Void 4/55 duped, Killmonger 4/55 duped. I’ve also got Magik 4/55, Iceman 4/55, Hulk 4/55.

Thx!

H_I_Z

maybe thing or sim for nullify, but archangel will shut down anyone who can bleed and take poison