Candletrap is a common Enchantment — Aura card from Innistrad: Double Feature (DBL), collector number 9. Current market price: $0.24 (foil $0.28), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has defender. Prevent all combat damage that would be dealt by enchanted creature. Coven — {2}{W}, Sacrifice this Aura: Exile enchanted creature. Activate only if you control three or more creatures with different powers.