McCree, Eminent Gunslinger

Ultimate: Deadeye - (McCree, Eminent Gunslinger enters the battlefield with three charge counters on him. At the beginning of your upkeep, remove a charge counter, then, when the last is removed, place three target counters on up to three target creatures, at the beginning of your next end step, destroy all creatures with a target counter on them, then place three charge counters on McCree, Eminent Gunslinger.)
Justice ain't gonna dispense itself.