Hardened-Scale Armor is a common Enchantment — Aura card from Global Series Jiang Yanggu & Mu Yanling (GS1), collector number 32. Current market price: $0.17, TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +3/+3.
All Global Series Jiang Yanggu & Mu Yanling cards and prices