Known as a living shroud - fortunately it occurs only very rarely in the tropical climate zone. It's like an inch and a half thick cloak (only thicker if he recently killed and ate a victim) that glides close to the ground at night. He envelops and suffocates his victim - only the Patron's spell stops them, but since he usually attacks the sleeping, they rarely have the opportunity to use the spell successfully. There will be no trace of the victim, nor of a slightly thicker cloak, which slips back into the darkness.