Masterwork Glaive is a glaive in Owlcat Pathfinder Games.

Source

Pathfinder: Kingmaker	Found in Armag's Tomb City of Hollow Eyes House at the Edge of Time Sold by Oleg Leveton
Beneath The Stolen Lands KM DLC	Sold by Honest Guy x4
Varnhold's Lot KM DLC	Sold in Varnhold by Kjerdi x4
Through the Ashes WotR DLC	Found in Rich Quarter