Cheapest priced copy (Commander 2021): $0.79 at Card Kingdom, near mint, their price list as of .
Theoretical Duplication 
Instant · Rare · Commander 2021 · #34
Whenever a nontoken creature an opponent controls enters this turn, create a token that's a copy of that creature.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.79 to $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2021 | 34 | Rare | $0.79 | — |
| Commander 2021 | 361 | Rare | $2.29 | — |
| Wilds of Eldraine Commander | 112 | Rare | $0.99 | — |