Cheapest priced copy (Global Series Jiang Yanggu & Mu Yanling): $0.35 at Card Kingdom, near mint, their price list as of .
Moon-Eating Dog 
Creature — Dog · 3/3 · Uncommon · Global Series Jiang Yanggu & Mu Yanling · #10
As long as you control a Yanling planeswalker, this creature has flying. (It can't be blocked except by creatures with flying or reach.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Global Series Jiang Yanggu & Mu Yanling | 10 | Uncommon | $0.35 | — |
| The List | GS1-10 | Uncommon | $0.35 | — |