Up for sale is the boosting Dwarven Weaponsmith, an uncommon card from the Antiquities expansion of Magic: the Gathering. This is the original, black-bordered, English version.
Dwarven Weaponsmith: 1/1 Red Creature (Dwarf Artificer); tap Dwarven Weaponsmith and sacrifice an Artifact to put a +1/+1 counter on target Creature; play this Ability only during your upkeep; casting cost 1R.
These cards are in Very Fine to Near Mint condition. Most have seen at least some light play.