23 printings of Thornwood Falls
They range from $0.13 to $0.35 — a 3× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Warhammer 40,000 Commander | 40K 302★ | — |
| Commander 2016 | C16 333 | $0.35 |
| Warhammer 40,000 Commander | 40K 302 | $0.31 |
| Modern Horizons 3 Commander | M3C 396 | $0.31 |
| Throne of Eldraine | ELD 313 | $0.30 |
| The List | PLST C18-287 | $0.27 |
| Foundations | FDN 269 | $0.25 |
| Tarkir: Dragonstorm | TDM 269 | $0.24 |
| Commander 2015 | C15 315 | $0.24 |
| Ikoria: Lair of Behemoths | IKO 256 | $0.24 |
| Tales of Middle-earth Commander | LTC 338 | $0.23 |
| Commander Legends | CMR 498 | $0.19 |
| Khans of Tarkir | KTK 244 | $0.18 |
| Core Set 2020 | M20 258 | $0.16 |
| Eternal Masters | EMA 246 | $0.15 |
| March of the Machine | MOM 274 | $0.15 |
| Commander 2018 | C18 287 | $0.14 |
| Aetherdrift | DFT 266 | $0.14 |
| Fate Reforged | FRF 173 | $0.14 |
| Duskmourn: House of Horror Commander | DSC 314 | $0.13 |
| Core Set 2021 | M21 257 | $0.13 |
| Kamigawa: Neon Dynasty | NEO 279 | $0.13 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.