Leonardo, Ninja Turtle

Ninjitsu {u}{u}{b}- (Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Leonardo, Ninja Turtle or another creature that shares a creature type with Leonardo deals combat damage to a player you may put a creature that shares a creature type with Leonardo from your hand into play.
Ninjas you control get +1/+1