The Last Ronin's Technique (TMT-012) - Teenage Mutant Ninja Turtles Foil

Sneak 1W (You may cast this spell for 1W if you also return an unblocked attacker you control to hand during the declare blockers step.)

Create three 1/1 white Ninja Turtle Spirit creature tokens. If this spell's sneak cost was paid, they enter tapped and attacking.