In Murkmire Malevolence, Ulre assembled a team of thieves intent on stealing the Murkmire Stone. Unknowingly, there was as a rival team competing to do the same, assembled by the Golden Vault, and the two encountered each other a few times as they scoped out the Cliffsunder Museum of Natural History prior to Alda Arkin's gala.
Chaos ensued when Caelas Helefir arrived at the gala, seeming to have obtained intel that Ulre would be there in disguise. Before the brothers met, however, Matthew caused a bust-up by announcing to Caelas that he was working for Ulre; though this was a complete lie, it resulted in Ulre needing to reveal himself and flee. Though he failed in his endeavor to steal the Murkmire Stone, he managed to escape the clutches of his brother by temporarily propelling himself through the Ethereal Border.