Grisly Transformation is a common Enchantment — Aura card from The List (PLST), collector number BNG-74. Current market price: $0.10, TCGplayer market prices via Scryfall.
Enchant creature When this Aura enters, draw a card. Enchanted creature has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)