Examine a book called 'The Chant of the Exarchs' in Exarch's Seclusion. ( -16, 58, -211 ) Copy/waypoint -16, 58, -211
Don't kill Exarch Trulnariz or a herald of Dar (his placeholder) before reading the book! They are needed for the next step, and unfortunately spawn right in front of the book.
If you killed the Exarch or his placeholder before reading the book there is another herald of Dar that will update the quest. He is located in the Hall of Rites at ( 9, 65, -63 ) Copy/waypoint 9, 65, -63.
Find four keys from Scaleborn harbingers that spawn in Exarch's Seclusion. This is an uncommon quest update.
Another harbinger spawn is Banisher Preparatory. ( 170, 60, -50 ) Copy/waypoint 170, 60, -50
Go back to unlock 'The Chant of the Exarchs'.
You must now collect 8 pieces of paper and 8 pieces of chalk:
Slay 8 droags of any type to get 8 wings (to be used as paper).
Harvest 8 Charcoal Clumps in Banisher Preparatory ( 151, 66, -26 ) Copy/waypoint 150.95, 65.76, -26.46 or Ready Room ( 196, 157, -80 ) Copy/waypoint 196.01, 157, -80. The nodes have a respawn of ~5 minutes.
Go back to the Exarch's Seclusion and click the book to transcribe it. You will obtain a transcribed coded map.
Find a droag who can help you translate the map. Take the map to a Scaleborn blasphemer in the Scaleborn Cell ( 78, 126, 171 ) Copy/waypoint 77.91, 126.14, 170.87.
Take a sacrificial blade from the Ceremony Weapon Rack in the Room of Recovery at ( -173, 43, -180 ) Copy/waypoint -173, 43, -180.
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