C3

Bare bones C3. Barf out as many 3 power cards as you can while using Magik and Crystal to draw into your combo and tech cards (Cerebro + Mystique along with Shang, Valkyrie and Killmonger). Very low ceiling traded off for extreme consistency.

Eats Destroy, Loki, She-Naut and Zoo decks alive.

Thanos can be hard if they get to cheat out X, other than that though, the matchup is very easy (just be VERY aware of Reality Stone killing Limbo early, we have Quake to play around location change like that). Surfer is VERY hard to beat, you need exactly Invisible Woman hiding your Cerebro from possible Rouges and Valkyrie last turn while also not holding priority. 

Discard is almost impossible to beat.