That Arcane-Less Dome... That's what Aether named it.
Lame? Maybe.
But so what?
Aether didn't want to expend his brain cells coming up with a unique name every time, like in the novels he read.
He just named it something straightforward that conveyed what the artifact could do.
Anyhow,
The Arcane-Less Dome had one significant flaw.... it required four individual crystal balls to create the dome. These small black crystals were responsible for the filtering and barrier, but they had a big defect.... they didn't form one single, continuous dome.
Instead, they formed four individual domes that overlapped, creating what appeared to be a perfect circular dome. However, in reality, it was far from perfect. There were four intersection points where each circle overlapped with the other two. [Author's note: Think of it as a Venn Diagram.]