Cheapest priced copy (Portal Three Kingdoms): $9.49 at Card Kingdom, near mint, their price list as of .
Riding Red Hare 
Sorcery · Common · Portal Three Kingdoms · #18
Target creature gets +3/+3 and gains horsemanship until end of turn. (It can't be blocked except by creatures with horsemanship.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $9.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Portal Three Kingdoms | 18 | Common | $9.49 | — |