Yeah there is a lot of cleaning up around this and the whole Grove vs Doom (and Nysegard)
Here is what I’ve change things to
“The Grove?” Talarius asked. “The bizarre mountain region in Astlan?”
“And in other worlds. It is a mountain hedged grove and an extra dimensional space that resides on multiple worlds of the localverse simultaneously.” Stainsberry told him.
“It resides on multiple worlds at once?” Talarius frowned. “How is that even possible?”
“Really good magineering, I’d suspect.” Thrinarv said bringing his mug up for a drink. After drinking, he lowered and tilted the mug, eyeballing the inside skeptically, “should have ordered sooner, getting pretty dry in here.”
“It acts as sort of diplomatic refuge for our localverse.” Stainsberry said. “They have also been very active on Nysegard, however, due to their very close relations with the alvar, and the alvaran royalty, they do not work that much with Doom. Certainly not since Orcus was slain. Prince Ariel of Astlan, who alternates with his sister as one of their Elders is a close ally of Prince Elyas of Etterdam, who was key in the whole Etterdam situation.”