Mr. Crystal

Required: Mr. Negative and Crystal

This isn't for climbing ranked. It's for pure fun. 

Basically play your 2 or 3 drops where ever. Then combo toss Mr. Negative on turn 4. Turn 5 use any 1 or 0 drops + crystal in middle location. This will draw you some fun invert cards. Kill monger is there to to clear out squirls, rocks, raptors or ninjas from clogging your board because you need the space. America Chavez is in there to have a better chance at drawing your combo cards before round 4. But she can mess up your turn 6 by being a 9 drop that you can't even use. So you're welcome to switch her with something else. 

Also avoid using task master in this deck as you basically lose his 0/5 to something smaller.