Storm-Kiln Artist is a rare Creature — Dwarf Shaman card from Secret Lair Drop (SLD), collector number 2352. Current market price: $16.59 (foil $22.45), TCGplayer market prices via Scryfall.
This creature gets +1/+0 for each artifact you control. Magecraft — Whenever you cast or copy an instant or sorcery spell, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")