auper Commander (PDH) is a variant of Commander (EDH) in which decks are made up entirely of commons with the exception of the commander(s) which can be any uncommon creature (or uncommon Background if the chosen creature has "Choose a Background." You can read the official rules and the banlist (Rhystic Study and Mystic Remora) at the PDH Home Base (www.pdhhomebase.com/rules).