As Foretold [WOT - 14]

Rarity: R #: 14 Creature Type or Sub Type: Enchantment Rules Text Contains: At the beginning of your upkeep, put a time counter on As Foretold. Once each turn, you may pay 0 rather than pay the mana cost for a spell you cast with converted mana cost X or less, where X is the number of time counters on As Foretold.