Cheapest priced copy (Shards of Alara): $4.49 at Card Kingdom, near mint, their price list as of .
Sphinx Sovereign 
Artifact Creature — Sphinx · 6/6 · Mythic · Shards of Alara · #196
Flying
At the beginning of your end step, you gain 3 life if this creature is untapped. Otherwise, each opponent loses 3 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $4.49 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 196 | Mythic | $4.49 | $10.99Out of stock |
One ruling from Wizards of the Coast
- 1 October 2008The ability checks whether Sphinx Sovereign is tapped or untapped at the time the ability resolves. If Sphinx Sovereign is no longer on the battlefield by then, the ability checks whether Sphinx Sovereign was tapped or untapped at the time it left the battlefield.