Cheapest priced copy (Magic 2015): $0.35 at Card Kingdom, near mint, their price list as of .
Coral Barrier 
Creature — Wall · 1/3 · Common · Magic 2015 · #49
Defender (This creature can't attack.)
When this creature enters, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2015 | 49 | Common | $0.35 | $0.79 |