Up for sale is the bivalved Clambassadors, a common card from the Unglued expansion of Magic: the Gathering. These are the original, silver-bordered, English version.
Clambassadors: 4/4 Blue Creature (Clamfolk); if Clambassadors damages any player, choose an Artifact, Creature or Land you control; that player gains control of that Artifact, Creature or Land; casting cost 3U.
These cards are all in at least Very Fine condition, with most being in unplayed, Mint/Near Mint condition.