Leonardo, the Balance (Borderless) (TMC-001) - Commander: Teenage Mutant Ninja Turtles

Whenever a token you control enters, you may put a +1/+1 counter on each creature you control. Do this only once each turn.

WUBRG: Creatures you control gain menace, trample, and lifelink until end of turn.

Partner—Character select (You can have two commanders if both have this ability.)