Raethyark

Raethyark is a level 53 World Boss located in of. It has three spawn spots and is only available once in a channel, every hour (Nightwood, Dakonan Junction, Raven Altar)

Raethyark looks like a normal mob, with the only difference that he kneels and when you come close he stands up. He is between mobs, but fairly easy to kill so no problem.