{T}: Change the text of target white enchantment you control that doesn't have cumulative upkeep by replacing all instances of one color word with another. <em>(For example, you may change "black creatures can't attack" to "blue creatures can't attack.")</em> That enchantment gains "Cumulative upkeep {1}." <em>(At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.)</em>