In search of the Rune Sphere.

How did Andrias end up there? I don't know, I just have a mod installed that adds extra heroes, and that's it. By the way, he also appeared in the tavern when I replayed the map. Yes, I forgot to mention another plus of the map: I really liked the idea of instantly transferring troops to Edward. And regarding his specialty, wouldn't it be more useful to give him a speed boost (like Myth) or an engineer with advanced machines and a tent ("Viti's older brother")?