Planes
Depiction of the Inner Planes from the Manual of the Planes:
The Core Elemental Planes (Inner Planes):
These four planes are the foundational realms of pure elemental essence.
Elemental Plane of Air: An endless sky with floating islands.
Elemental Plane of Earth: A realm of infinite caves and tunnels.
Elemental Plane of Fire: A blazing expanse with lava rivers.
Elemental Plane of Water: A vast, deep ocean.
The Para-elemental Planes - where two elemental planes meet:
Ice: Air + Water
Magma: Fire + Earth
Ooze: Earth + Water
Smoke: Air + Fire
The Energy Planes
These planes are sources of creation and decay, bordering the elemental planes:
Positive Energy Plane: The source of life and creation.
Negative Energy Plane: The source of entropy and decay.
The Quasi-Elemental Planes - where an elemental plane touches an energy plane:
Positive Energy Side:
Lightning: Air + Positive Energy
Mineral: Earth + Positive Energy
Radiance: Fire + Positive Energy
Steam: Water + Positive Energy
Negative Energy Side:
Ash: Fire + Negative Energy
Dust: Earth + Negative Energy
Salt: Water + Negative Energy
Vacuum: Air + Negative Energy