Up for sale is the Legendary Arcum Dagsson, a rare card from the Coldsnap expansion of Magic: the Gathering. These are the Foil, black-bordered, English version.
Arcum Dagsson: 2/2 Blue Legendary Creature (Human Artificer); tap Arcum Dagsson to have target Artifact Creature's controller sacrifice it; that player may search his/her library for a non-Creature Artifact card, put it into play, then shuffle his/her library; casting cost 3U.
These cards are in at least Very Fine condition, with most being in Mint/Near Mint, unplayed condition.
