Nantuko Slicer

Kicker {b}
When Nantuko Slicer enters the battlefield,
return target card from your graveyard to your
hand.
If this spell was kicked, exile target card in an
opponent's graveyard. For as long as that card
remains exiled, you may play it, and you may
spend mana as if it were mana of any color to
cast it.