6 printings of Great Oak Guardian
They range from $0.15 to $0.41 — a 3× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Commander Anthology | CMA 113 | $0.41 |
| Commander 2019 | C19 170 | $0.32 |
| Starter Commander Decks | SCD 186 | $0.27 |
| Tales of Middle-earth Commander | LTC 247 | $0.27 |
| The List | PLST C19-170 | $0.15 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.