Arcane Teachings is a uncommon Enchantment — Aura card from Tenth Edition (10E), collector number 188. Current market price: $0.37, TCGplayer market prices via Scryfall.
Enchant creature (Target a creature as you cast this. This card enters attached to that creature.) Enchanted creature gets +2/+2 and has "{T}: This creature deals 1 damage to any target."