Digsite Engineer is a rare Creature — Dwarf Artificer card from Commander 2021 (C21), collector number 342. Current market price: $2.18, TCGplayer market prices via Scryfall.
Whenever you cast an artifact spell, you may pay {2}. If you do, create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control."