Darkhon, Ruler of Dark

+2: Give target creature a Final Counter. That creature loses -1/-1.
-3: This ability can be activated as an instant. Remove a Final Counter from target creature. That creature either gets +5/+5 or -5/-5.
-10: Target opponent removes all creatures from the game, then creates a 0/1 Spirit creature, tapped, for each nontoken card removed this way.