Samej, the Great Plague

+2: Give 2 creatures of each other player -1/-1. Put one plague token on each creature.
-X: Give X creatures of each other player -X/-X. Put one plague token on each creature. Put plague tokens on every enemy enchantment as well.
-10: Exile every card with a plague token on it, disregarding any text that the cards say, including cards with abilities that protect against exile.