Connected planes and Multiverses.

Undina sits at the conflux of several other planes and multiverses, allowing ease of travel between them, and has on occasion caused problems. though these planes are connected through various means, not all are stable or safe.

Planes

These planes are often linked to the natural order of Undinia, and as such pertinently connected. All have a permanent barrier between them and Undinia itself, however, these tend to need a powerful spell to breach through.

Conflux

Also known as the elemental plane, this plane is separated into several areas, connected by a large citadel, which is said to be the hall of the divines. The elemental Touched are connected to this plane and are said to be able to pass freely, it is also said to be home to the Giants. Many places seem connected to this plane, though only the Burning Forest has held a full portal in 122 Fey.

Fey Mists

The source of magic in Undina, the Fey Mists is the home of various Fey creatures and is believed to be the original plane of the Elves. Ruled by the Fey court, this plane is also said to be where people go when they dream. It is said to be connected to Undinia in the hidden forests, forgotten lakes, and isolated caves, though an unstable connection did exist in the Dread Forrest, this turned into a stable portal in 122 Fey.

Lower rings

The Lower Rings are the realms of devils and demons, separated into several layers, they are each ruled by a Lord. Fully stable portals exist in each major Tiefling city in Undinia, each connected to the city's patron's ring. Though an Unstable tear exists in Crowharror, opened by the Sage in the forgotten era.

Nether

Also known as the afterlife, or beyond, the Nether is a twisted mirror version of Undinia, with wandering spirits, undead, and shadow creatures. It is said necromantic magic taps into this plane. While it is said the only true portal was in Frostmourn, this being sealed by Grunkles angels, rumors of another portal existing have circulated throughout the ages.

Void

The black plane of chaos, the void is a place of pure dark power. It is said to be the plane where Sardia was imprisoned, though that's more a pocket dimension. The only entrance is the unstable tear at Voiddoll.

Multiversal

Undinia is also connected to a vast network of multiverses, below are some of the known realms.

Helos

A land of myths and gods, Helos hasn't directly interacted with Undinia, but some Fey have mentioned it in passing.

Lantria

A darker land that seems to fear magic. This is where the Ghost ship comes from, often opening tears from the other side.

Phervia

The home realms of the Phervian, this realm was said to be destroyed, with the survivors coming through at the start of the Phervian Era.

The Wheel

Said to be the home plane of Saberfang, Veil, Wralin, and Jam-Jam, the Wheel is suspected to be a war-torn plane. It is connected to Undinia through the Void.

Type

Metaphysical, Astral