Aternarcha, Galaxy Bender

+3: Your opponents discard and draw 5 cards. If they can't, they lose 3 life.
-7: Reverse three moves an opponent made this turn. You gain another main phase and untap step.
-14: You opponents discard 10 cards and sacrifice 7 permanents. You draw 10 cards and place 7 permanents on the battlefield. You gain 10 life.