Fiery Mantle is a common Enchantment — Aura card from Urza's Saga (USG), collector number 186. Current market price: $0.19, TCGplayer market prices via Scryfall.
Enchant creature {R}: Enchanted creature gets +1/+0 until end of turn. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.