Visions of Phyrexia [The Brothers' War]

Set: The Brothers' War Type: Enchantment Rarity: Rare Cost: {2}{R}{R} At the beginning of your upkeep, exile the top card of your library. You may play that card this turn.At the beginning of your end step, if you didn't play a card from exile this turn, create a tapped Powerstone token. (It's an artifact with “{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.”)