Leonardo, Leader in Blue (TMT-016) - Teenage Mutant Ninja Turtles

Sneak 3WW (You may cast this spell for 3WW if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)

When Leonardo enters, if his sneak cost was paid, creatures you control get +2/+0 until end of turn.

1W: Leonardo gains first strike until end of turn.