Cheapest priced copy (Morningtide): $0.79 at Card Kingdom, near mint, their price list as of .
Supreme Exemplar 
Creature — Elemental · 10/10 · Rare · Morningtide · #53
Flying
Champion an Elemental (When this enters, sacrifice it unless you exile another Elemental you control. When this leaves the battlefield, that card returns to the battlefield.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.79 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Morningtide | 53 | Rare | $0.79 | $1.49 |