Taszo met the party onboard Captain Sebarial’s ship. He is a Shin Stone Shaman who was tasked by the leaders of the Shin to find Taln’s lost honorblade. He tried to take a ship to avoid walking on stone, because while he has permission to walk on stone, he was uncomfortable doing so.
So he made a deal with Sebarial to transport him to New Natan, but in typical fashion Sebarial doublecrossed him and threw him in prison. Sebarial told Taszo that he imprisoned him to use him as leverage in negations with the Shin people, probably in an attempt selling Taszo back as a truthless to the Shin people.
Kael eventually rescued Taszo from the hold of the Void and Taszo is currently helping the party in Klna. He struck up an agreement with the party to travel with them to the shattered plains and he requested some help in locating the missing honorblade as well.
While the party is dealing with the army at the gates of Klna, he is helping the darkeyes evacuate the city.