Find nimrod in Sumer. He cannot be hunted, so you will need to search all the areas which may require that you do the Epic of Gilgamesh quest first.
Ask nimrod staff
Ask nimrod attune
Hold the staff and attune yourself to the earth essence of the Cretan bull. (Greece)
Hold the staff and attune yourself to the fire essence of the dragon Fadhmir in Beowulf (make sure you are FLYING)
Hold the staff and attune yourself to the water essence of a giant sea serpent. (this is the serpent in med south seas)
Hold the staff and attune yourself to the air essence of a fallen Grigori. (mob in seventh heavens, can do solo)