Barbed Servitor
From Murders at Karlov Manor set
Barbed Servitor
Artifact Creature — Construct
1/1
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.