Barbed Servitor is a rare Artifact Creature — Construct card from Murders at Karlov Manor Promos (PMKM), collector number 77p. Current market price: $0.48 (foil $0.61), TCGplayer market prices via Scryfall.
Indestructible When this creature enters, suspect it. (It has menace and can't block.) Whenever this creature deals combat damage to a player, you draw a card and you lose 1 life. Whenever this creature is dealt damage, target opponent loses that much life.