Dack's Dealer

Ninjutsu {1}{u}{r} ({1}{u}{r}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Dack's Dealer enters the battlefield, you
may choose to gain control of target artifact. If
you do, sacrifice Dack's Dealer.
When Dack's Dealer deals combat damage to a
player, draw that many cards then discard half
that many cards rounded down.