6 printings of Mystic Snake
They range from $0.71 to $3.31 — a 5× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Special Guests | SPG 35 | $3.31 |
| Apocalypse | APC 112 | $1.68 |
| Masters 25 | A25 208 | $1.43 |
| Time Spiral Timeshifted | TSB 97 | $0.91 |
| Modern Masters 2015 | MM2 180 | $0.71 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.