7 printings of Dragon Engine
They range from $0.13 to $0.94 — a 7× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Summer Magic / Edgar | SUM 246 | — |
| Antiquities | ATQ 49 | $0.94 |
| Revised Edition | 3ED 246 | $0.53 |
| Classic Sixth Edition | 6ED 282 | $0.40 |
| Fifth Edition | 5ED 366 | $0.40 |
| Dominaria Remastered | DMR 222 | $0.13 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.