Mythys, Fate's Champion

Creatures your opponents control have -2/-2.
+1: Each opponent sacrifices a creature.
+2: Sacrifice a creature. Each opponent loses life
equal to its power and you gain life equal to its toughness.
-7: You gain an emblem with "On your upkeep,
each player picks a creature in their graveyard.
You may put one of those creatures onto the battlefield under your control. Exile the others."
. [4]