https://magic.wizards.com/en/news/magic-story/planeswalkers-guide-to-edge-of-eternities
The plane is called the edge.
The Edge is donut shaped.
The Edge is stuck between the Chaos Wall and the Quiet Wall.
The Quiet Wall is entropic.
Most ships use nuclear moxite reactors.
The universe has a primitive understanding of magic.
Faster than Light travel uses a planar bridge equivalent.
The Edge has no contact with the multiverse.