Cheapest priced copy (Kamigawa: Neon Dynasty): $0.69 at Card Kingdom, near mint, their price list as of .
Experimental Synthesizer 
Artifact · Common · Kamigawa: Neon Dynasty · #138
When this artifact enters or leaves the battlefield, exile the top card of your library. Until end of turn, you may play that card.
{2}{R}, Sacrifice this artifact: Create a 2/2 white Samurai creature token with vigilance. Activate only as a sorcery.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.69 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kamigawa: Neon Dynasty | 138 | Common | $0.69 | $1.99 |
| The List | NEO-138 | Common | $0.69 | — |