Mochizuki, Geisha Master

Ninjutsu {1}{b}{r} ({1}{b}{r}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Mochizuki, Geisha Master enters the battlefield, destroy target tapped creature.
Whenever a creature dies, put a +1/+1 counter on Mochizuki and untap it.