Cheapest priced copy (Core Set 2019): $0.69 at Card Kingdom, near mint, their price list as of .
Riddlemaster Sphinx 
Creature — Sphinx · 5/5 · Rare · Core Set 2020 · #317
Flying (This creature can't be blocked except by creatures with flying or reach.)
When this creature enters, you may return target creature an opponent controls to its owner's hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.69 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2019 | 287 | Rare | $0.69 | — |
| Core Set 2020 | 317 | Rare | $0.99 | — |