Exorcising the Demon

After obtaining the Grater of Warding WuWei has discovered that a demon by the name of Gargauth has been bound to the shield. Seer Imwe tells of when a powerful mage named Mordenkainen help fight off a demon attack and bound Gargauth to the shield. Tiamet was so angered by this that she had attempted to pull Grater Temple into Avernus. Mordenkainen was able to stop her but the Grater Temple was lost into a pocket dimension that is disconnect by time and space.
Anaxi Zephries and Professor Finkelstein have informed your group that there are two ways of removing Gargauth from the Grater of Warding.

1. Have a child of the progenitor dragons speak the demons name. 
2. Have an arch devil cast dispel evil/good on the Grater of Warding 

There have been no reports recently of any major demon/devil activities on Eberron recently and no one has seen a child of the progenitors in a millennia. Only know place to find an arch devil would be in Avernus 
Anaxi Zephries informs your group that Kwalish has a device that can help with gaining access to Avernus

Quest Status- In Progress