From PathfinderWiki
(Magic item)
Slot (1E) Weapon
Origin Jistka Imperium
Affiliation Pharaoh of Blades

Source: Lost Kingdoms, pg(s). 19

Harosteir is a golem-commanding greatsword that Pharaoh of Blades stole from the Jistka Imperium millennia ago. It allows his wielder to cast charm spells on golems, bypassing their immunity to magic. The legendary sword was part of An-Hepsu VII's great collection of swords.[1]