Whenever Mastermind Plum attacks, exile up to one target card from a graveyard. If an artifact card was exiled this way, create a Treasure token (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color."). Whenever you cast a spell, if mana from a Treasure (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color.") was spent to cast it, you draw a card and you lose 1 life.