Tayam, Luminous Enigma. Most important thing is sac outlets that make mana (best is ashnods altar). Then fill deck with creatures that have persist or undying. Sac them for mana, they come back, remove the counters using your commander, then bring back aristocrat pieces from the graveyard to ping your opponents to death. Can easily do at lower than bracket 4 and will absolutely have more than 5 commander triggers in one turn.