Commander creatures you own have "Whenever this creature attacks a player, if no opponent has more life than that player, you create two Treasure tokens." (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

{T}: Add {C}. Any time you could mulligan and Serum Powder is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)

At the beginning of your upkeep, if you control no permanents other than Barren Glory and have no cards in hand, you win the game.

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

({T}: Add {W}.)

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.