Who should I rank up?

Scrubkiller_1

Any 4* would be maxed out, IMIW would go to rank 3. I currently have a maxed out medusa and Cap IW duped 4*s. Also Corvus Glaive and Wolverine X-23 unduped 5*s at rank 3. I dont have blade or star lord but these are my fave options, just dont know what would benefit me the most. Magik is good for defense and i love the power control. IMIW counters evade and had phenomenal utility, also good for defense. KM is good for dmg, defense, and utility. Help me out here folks. Thanks!

SDAATR

Iron Man IW 5* Unduped

All of them are awesome but i would go for IMIW just because he's a 5*

Scrubkiller_1

Correction* I just duped my KM.

Unknown

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Magik 4* Duped

Magik