Sorcery, U (1)
Common
Target player puts the top five cards of his or her library into his or her graveyard.
Genius is overrated, especially when it's someone else's.
Illus. Steven Belledin

10/1/2009: If there are fewer than five cards in the targeted player's library, that player puts all the cards from his or her library into his or her graveyard.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern