9 printings of Trained Armodon
They range from $0.08 to $0.40 — 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.
| Seventh Edition | 7ED 275★ | — |
| Eighth Edition | 8ED 284★ | — |
| Ninth Edition | 9ED 274★ | — |
| Duels of the Planeswalkers | DPA 85 | $0.40 |
| Eighth Edition | 8ED 284 | $0.19 |
| Tempest | TMP 260 | $0.16 |
| Seventh Edition | 7ED 275 | $0.11 |
| Ninth Edition | 9ED 274 | $0.08 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.