Up for sale is the surprising Booby Trap, a rare card from the Tempest expansion of Magic: the Gathering. This is the original, black-bordered, English version.
Booby Trap: Artifact; as Booby Trap comes into play, name a card other than a basic Land card and choose an opponent; the chosen player reveals each card s/he draws; when the chosen player draws the named card, sacrifice Booby Trap; if you do, it deals 10 damage to that player; casting cost 6.
These cards are in at least Very Fine condition, with most being in Near Mint or better condition.