Cheapest priced copy (Double Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Unlicensed Disintegration 
Instant · Uncommon · Kaladesh · #187
Destroy target creature. If you control an artifact, Unlicensed Disintegration deals 3 damage to that creature's controller.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters | 224 | Uncommon | $0.35 | $0.49 |
| Friday Night Magic 2017 | 5 | Rare | — | $0.49 |
| Kaladesh | 187 | Uncommon | $0.35 | $0.49 |
| The List | KLD-187 | Uncommon | $0.35 | — |
| Starter Commander Decks | 255 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 7 August 2020If the target creature is an illegal target by the time Unlicensed Disintegration tries to resolve, the spell won't resolve. It won't deal damage to any player. If the target is legal but not destroyed (most likely because it has indestructible), its controller is dealt 3 damage.
- 7 August 2020Whether or not you control an artifact is checked only after the creature is destroyed while Unlicensed Disintegration is resolving. For example, if you destroy a Fairgrounds Warden that exiled your artifact creature, Unlicensed Disintegration deals 3 damage to Fairgrounds Warden's controller.