Shardmage's Rescue is a uncommon Enchantment — Aura card from Duskmourn: House of Horror (DSK), collector number 411. Current market price: $0.29 (foil $0.42), TCGplayer market prices via Scryfall.
Flash Enchant creature you control As long as this Aura entered this turn, enchanted creature has hexproof. Enchanted creature gets +1/+1.