Ravenous vampyre

The Ravenous vampire appears at Fairy ring ALQ in the Haunted Woods east of Canifis when the player is on a Slayer challenge assigned by Mazchna or Achtryn. To activate the challenge, the player be near the ring and must contact Mazchna or Achtryn using an Enchanted gem. The monster will then drop from the sky into the centre of the ring and attack the player.

Other drops
Always drops Vampire dust; unknown if it ever drops anything else (no reports of other drops yet).