Jeff, Explorer of Stars

+1: Draw 2 cards, then discard a card. Target opponent discards cards equal to the converted mana cost of the card you discarded.
-6: Creatures you control get +1 +1 and indestructible until end of turn. Take an additional combat phase after this one.
-12: You get an emblem with "When you draw a card, all opponents lose life equal to it's converted mana cost." You draw 5 cards.