Cheapest priced copy (Theros Beyond Death): $4.49 at Card Kingdom, near mint, their price list as of .
Sphinx Mindbreaker 
Creature — Sphinx · 6/6 · Rare · Theros Beyond Death · #290
Flying
When this creature enters, each opponent mills ten cards.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Theros Beyond Death | 290 | Rare | $4.49 | — |