Donatello, Gadget Master (TMT-035) - Teenage Mutant Ninja Turtles Foil

Sneak 1U (You may cast this spell for 1U if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)

Whenever Donatello deals combat damage to a player, create a token that's a copy of target artifact you control.