Korvef, Vengeance Seeker

+2: Korvef, Vengeance Seeker deals 3 damage as you chose to up to one, two, or three targets
-X: Korvef, Vengeance Seeker deals X damage to target player, then add any combination of black and red mana to your mana pool
-9: You get an emblem that says "On your turn, spells you control cost {1} for each life your opponents have lost this turn"