Up for sale is the library-emptying Cathartic Adept, a common card from the Shards of Alara expansion of Magic: the Gathering. This is the original, black-bordered, English version.
Cathartic Adept: 1/1 Blue Creature (Human Wizard); tap Cathartic Adept to have target player put the top card of his/her library into his/her graveyard; casting cost U.
These cards are all in at least Very Fine condition, with most being in unplayed, Mint/Near Mint condition.