D&D Adventurers League 10-09 Recipe for Retribution

The plan is in motion, and you must scour the breadth and depth of IcewindDale for the components an extraplanar stranger needs to create explosivedevices powerful enough to bury the ancient Abeiran city of Xorvintroth and seal away the horrors residing within. Are you up to the challenge?
Part Nine of the Plague of Ancients Series of Adventures. A Four-Hour Adventure for 5th through 10th-Level Characters Optimized for APL 9.
Adapted for Fantasy Grounds by: Jason Smith