The F.G.o.K.a.B.

{t}: Discard a card, choose target enemy, then roll
a d20.
Even | Knife — Deal damage to that enemy equal
to the mana cost of the discarded card.
Odd | Boomerang — Deal 2 damage to that enemy,
then return the discarded card to your hand.
Paracausal? — If The F.G.o.K.a.B. leaves the battlefield for any reason, you may have it return
to the battlefield under your control.