Cheapest priced copy (Commander Masters): $3.99 at Card Kingdom, near mint, their price list as of .
Storm-Kiln Artist 
Creature — Dwarf Shaman · 2/2 · Uncommon · Strixhaven: School of Mages · #115
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.")
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
9 printings · $3.99 to $29.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 260 | Uncommon | $3.99 | $4.99 |
| Commander Masters | 644 | Uncommon | $5.49 | $14.99 |
| Outlaws of Thunder Junction Commander | 181 | Uncommon | $3.99 | — |
| The List | OTC-181 | Uncommon | $4.49 | — |
| The List | STX-115 | Uncommon | $3.99 | — |
| Secret Lair Drop | 2352 | Rare | $22.99 | $29.99 |
| Secrets of Strixhaven Commander | 255 | Uncommon | $3.99 | — |
| Strixhaven: School of Mages | 115 | Uncommon | $3.99 | $4.99 |
| Tarkir: Dragonstorm Commander | 235 | Uncommon | $3.99 | — |
4 rulings from Wizards of the Coast
- 16 April 2021If an effect creates a copy of an instant or sorcery spell, this will also cause the magecraft ability to trigger.
- 16 April 2021Some effects instruct you to copy an instant or sorcery card in a zone other than the stack. These copies do not cause magecraft abilities to trigger. However, most effects that do this also allow you to cast the copy, and casting the copy will cause magecraft abilities to trigger.
- 16 April 2021If an effect creates multiple copies of an instant or sorcery spell, magecraft abilities trigger once for each copy created by the effect.
- 16 April 2021Each magecraft ability has a different effect, although they all have the same trigger condition, whenever you cast or copy an instant or sorcery spell.