nadu, jeweled mana extortionis

Creatures you control have "Whenever this creature becomes the target of a spell or ability, create X jeweled lotus petal token in play with {T}, : Add three mana of any one color. Spend this mana only to cast your commander or activate its abilities. {T}: Add {C}{C}. At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. where X is the number of artifacts and enchantments your opponents control.