Kuro, the Dark Hand

Ninjutsu {2}{u}{b} ({2}{u}{b}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Kuro, the Dark Hand attacks, if its Ninjutsu cost was paid this turn, it gains double
strike until end of turn.
Whenever Kuro, the Dark Hand deals combat
damage to a player, choose one—
•Draw a card, then discard a card.
•Target player puts the top two cards of their
library into their graveyard.