Traitors' Merit is a unique pollaxe in Pillars of Eternity.
||Once owned by an Aedyran lord named Ygendurl, Traitors' Merit earned its title during the War of Defiance. Ygendurl's troops, beaten and shattered by Hadret's forces, knew they were on the losing side of the war. Ygendurl called for parley and struck an accord – his soldiers would take up arms for Hadret in return for clemency. Ygendurl then turned his weapon and his remaining forces upon his former allies, flanking them as they focused their attention upon Hadret. Caught unawares, the Imperial forces suffered terrible losses during the ensuing chaos.
Despite his efforts, neither Ygendurl nor his troops lived to see the end of the war. His infamy, however, survives, and he is not fondly remembered by those on either side of the conflict.
Doesn't drop from Scathden if you decide to spare him during True to Form, and then kill him afterwards while Hiravias is in the party.