26 printings of Royal Assassin
They range from $0.39 to $345.00 — a 885× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Junior Series Europe | PJSE 2E05 | — |
| Limited Edition Alpha | LEA 123 | — |
| Assassin's Creed | ACR 306 | — |
| Eighth Edition | 8ED 159★ | — |
| Junior Super Series | PSUS 11 | — |
| 30th Anniversary Edition | 30A 417 | — |
| Ninth Edition | 9ED 159★ | — |
| Assassin's Creed | ACR 213 | — |
| Limited Edition Beta | LEB 124 | $345.00 |
| Unlimited Edition | 2ED 124 | $70.38 |
| 30th Anniversary Edition | 30A 120 | $40.00 |
| Collectors' Edition | CED 124 | $35.50 |
| Intl. Collectors' Edition | CEI 124 | $32.06 |
| Revised Edition | 3ED 125 | $15.42 |
| Fourth Edition | 4ED 157 | $5.68 |
| Summer Magic / Edgar | SUM 125 | $4.00 |
| Tenth Edition | 10E 174 | $1.26 |
| Eighth Edition | 8ED 159 | $1.11 |
| Magic 2011 | M11 116 | $0.56 |
| Assassin's Creed | ACR 164 | $0.45 |
| Magic 2010 | M10 110 | $0.43 |
| Dominaria Remastered | DMR 310 | $0.42 |
| Assassin's Creed | ACR 93 | $0.42 |
| Magic 2012 | M12 105 | $0.41 |
| Dominaria Remastered | DMR 101 | $0.39 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.