Sleeper's Robe is a uncommon Enchantment — Aura card from Invasion (INV), collector number 273. Current market price: $0.52 (foil $10.41), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.) Whenever enchanted creature deals combat damage to an opponent, you may draw a card.