6 printings of Wall of Denial
They range from $0.27 to $1.29 — 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.
| Modern Masters 2017 | MM3 201 | $1.29 |
| Commander 2011 | CMD 237 | $0.58 |
| Duel Decks: Venser vs. Koth | DDI 11 | $0.50 |
| Alara Reborn | ARB 16 | $0.41 |
| The List | PLST ARB-16 | $0.27 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.