This Magic the athering spoiler spills the beans on Curse of the Bloody Tome from the Innistrad block.
This Common was recently spoiled from Innistrad:
Curse of the Bloody Tome – 2U (common)
Enchantment – Aura Curse
At the beginning of enchanted player’s upkeep, that player puts the top two cards of his or her library into his or her graveyard.