Xena, Sadistic Necromancer

{t}, Sacrifice a creature: Reveal the top card of
your library and put that card into your hand.
You lose life equal to its converted mana cost.
{1}{b}{r}, {t}, Pay 3 life: Return a creature card at
random from your graveyard to the battlefield. It
gets +1/-1 and gains haste and lifelink until end
of turn.
"You don't have my permission to rest."