Appendage Amalgam is a common Enchantment Creature — Horror card from Duskmourn: House of Horror (DSK), collector number 83. Current market price: $0.17 (foil $0.26), TCGplayer market prices via Scryfall.
Flash Whenever this creature attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)