9 printings of Mycosynth Wellspring
They range from $0.23 to $8.92 — a 39× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Secret Lair Drop | SLD 1435★ | — |
| Secret Lair Drop | SLD 1435 | $8.92 |
| Duel Decks: Elves vs. Inventors | DDU 56 | $0.47 |
| The Brothers' War Commander | BRC 150 | $0.39 |
| Commander 2021 | C21 252 | $0.39 |
| Commander Anthology Volume II | CM2 201 | $0.39 |
| Commander 2016 | C16 262 | $0.34 |
| New Phyrexia | NPH 145 | $0.23 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.