Shatakizowa, Son of Lidia

Ninjutsu {x}{u/b}{u/b} (Return an unblocked attacker you control to hand: Put this card onto the battlefield from
your hand tapped and attacking.)
Shatakizowa, Son of Lidia enters the battlefield
with X poison counters on it.
When Shatakizowa deals combat damage to a
player, you may move a poison counter from
Shatakizowa onto a creature that player controls.
When Shatakizowa dies, destroy all creatures
with poison counters on them.