Helm of the Gods is a rare Artifact — Equipment card from Magic Origins (ORI), collector number 230. Current market price: $2.99 (foil $7.35), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+1 for each enchantment you control. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)