Cheapest priced copy (Lorwyn): $11.99 at Card Kingdom, near mint, their price list as of .
Wanderwine Prophets 
Creature — Merfolk Wizard · 4/4 · Mythic · Special Guests · #132
Champion a Merfolk (When this enters, sacrifice it unless you exile another Merfolk you control. When this leaves the battlefield, that card returns to the battlefield.)
Whenever this creature deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an extra turn after this one.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $9.99 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 95 | Rare | $11.99 | $19.99 |
| Special Guests | 132 | Mythic | $11.99 | $9.99 |