Valatrecia, King of Trisenvell

Whenever you cast a spell, you may pay {w}. If
you do, choose up to one target permanent card
in your graveyard that was put there from the
battlefield this turn. Return it to the battlefield
tapped at the beginning of the next end step.
Whenever you cast a spell, you may pay {b}. If
you do, each opponent loses 3 life unless that
player discards a card.