8 printings of Genesis Hydra
They range from $0.37 to $1.17 — 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.
| Magic 2015 Promos | PM15 176★ | — |
| The List | PLST M15-176 | $1.17 |
| Iconic Masters | IMA 163 | $0.51 |
| Magic 2015 | M15 176 | $0.42 |
| March of the Machine Commander | MOC 298 | $0.40 |
| Outlaws of Thunder Junction Commander | OTC 193 | $0.39 |
| Commander 2020 | C20 172 | $0.37 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.