Cheapest priced copy (Duel Decks: Elves vs. Inventors): $0.35 at Card Kingdom, near mint, their price list as of .
Reclusive Artificer 
Creature — Human Artificer · 2/3 · Uncommon · The List · #DDU-51
Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature enters, you may have it deal damage to target creature equal to the number of artifacts you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Elves vs. Inventors | 51 | Uncommon | $0.35 | — |
| Magic Origins | 216 | Uncommon | $0.35 | $0.49 |
| The List | DDU-51 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 22 June 2015Count the number of artifacts you control as Reclusive Artificer’s triggered ability resolves to determine how much damage it deals.
- 22 June 2015If you are the only player who controls a creature when Reclusive Artificer’s second ability triggers, you must choose one of those creatures as the target, although you can choose to not deal it damage.