Mizukage Mei

Ninjutsu {3}{u} ({3}{u}, Return an unblocked attacker
you control to your hand: Put this card onto the battlefield from you hand tapped and attacking.)
When Mizukage Mei deals combat damage to a
player that player puts the top 4 cards of their
library into their graveyard. Then you draw
a card.
{3}{u}, {t}: Return Mizukage Mei to
its owner's hand.