Lord Voldemort

+3: Horcrux: Select target non-land permanent you control, It becomes a Horcrux: Lord Voldemort remains in play for as long as there is a Horcrux.
-6: Duel: Force two target creatures to fight each other, losing creature is exiled, take control of the winning creature.
-10: Graveyard: Target opponent loses 1 life for each card in all graveyards.