4 printings of Vial of Dragonfire
They range from $0.05 to $0.17 — 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.
| Core Set 2020 | M20 241 | $0.17 |
| Commander Masters | CMM 417 | $0.11 |
| Dragons of Tarkir | DTK 247 | $0.05 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.