Moon-Eating Dog is a uncommon Creature — Dog card from Global Series Jiang Yanggu & Mu Yanling (GS1), collector number 10. Current market price: $0.18, TCGplayer market prices via Scryfall.
As long as you control a Yanling planeswalker, this creature has flying. (It can't be blocked except by creatures with flying or reach.)
All Global Series Jiang Yanggu & Mu Yanling cards and prices