mtg card sleeve size Standard Game Sleeves (63.5x88mm) – By The Board Games & Entertainment Sleeve Kings Standard Card Sleeves

Celes, Rune Knight On ETB, Celes, Rune Knight lets you pitch any number of cards, then draw that many plus one, and it pumps your whole team with +1/+1 counters when creatures enter from the graveyard

The set also introduces a second new mechanic called Teamwork (because, Avengers), which lets you tap your creatures to pay for additional spell effects, like HULK SMASH

The most cited example is the Gruul (red/green) commander Grumgully, the Generous

I toyed with the idea of a group of characters who share a similar mechanic that let you build a multicoloured deck

That takes both skill and an absolute contempt for the fundamentals of the game, and I salute you

Bonus points for being an option for the command slot, though I wouldnt particularly recommend trying to run mono-black infect (trust me, I tried)