Jack, Thief Adept

Ninjutsu {1}{w/b} (Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Jack, Thief Adept deals combat damage to a player, you may gain control of target artifact that player controls with converted mana cost {3} or less.
Whenever Jack, Thief Adept untaps, you may return it to your hand.
"There is no such thing as too much gold."