Sorcery, 1UB (3)
Uncommon
Target opponent reveals cards from the top of his or her library until four land cards are revealed. That player puts all cards revealed this way into his or her graveyard.
"The soul is only as eternal as I say it is."
—Sharuum the Hegemon
Illus. rk post

5/1/2009: The four land cards, as well as all the other cards revealed during this process, are put into the graveyard. If there aren't four land cards left in the targeted opponent's library, that player's entire library is put into the graveyard.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern