Bjorn, Frantic Healer

+1: Discard X cards, then draw X cards, where X is one plus the number of creatures that died under your control this turn.
-1: Return up to 2 creature cards from your graveyard to your hand, then discard a card.
-6: Sacrifice Bjorn. Return up to 3 cards and up to 1 planeswalker card from your graveyard to your hand.