Axgard Artisan is a uncommon Creature — Dwarf Artificer card from March of the Machine (MOM), collector number 332. Current market price: $0.41 (foil $0.54), TCGplayer market prices via Scryfall.
Whenever one or more +1/+1 counters are put on this creature for the first time each turn, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")