The Positive Energy Plane
The Positive Energy Plane is best compared to the heart of a star. It is a continual furnace of creation, a domain of brilliance beyond the ability of mortal eyes to comprehend. Its very being wavers and ripples as new matter and energy is born and swells to full power like a bursting fruit. It is a vibrant plane, so alive with itself that travelers themselves are empowered by visiting it. The plane of positive energy is a place of brilliant white, where the inherent power of the plane bleaches out the spectrum and leaves an environment of nothing but white and stark shadows.
The Positive Energy Plane has no surface and is akin to the Elemental Plane of Air with its wide, open nature. However, every bit of this plane glows brightly with innate power. This power is dangerous to mortal forms, which are not made to handle it.
Despite the beneficial effects of the plane, it is one of the most hostile of the Inner Planes. An unprotected character on this plane swells with power as positive energy is forcefed into her. Then, her mortal frame unable to contain that power, she immolates as a small planet caught at the edge of a supernova. Visits to the Positive Energy plane are brief, and even then travelers must be heavily protected.
Outsiders native to the Positive Energy Plane are immune to the detrimental effects typical to the plane, though they still benefit from the regenerative nature of the domain. Beings that cannot be healed in a normal manner or do not benefit from positive energy, such as constructs, can survive in this domain as well.
The greatest immediate danger on the Positive Energy Plane is the plane itself. Its radiance poses a threat to travelers who go there. Even among the brilliant and deadly radiance of the Positive Energy Plane, some regions are more intense and dangerous than the others. These regions erupt like miniature suns, immolating anyone in its vicinity.
Edge Zones are quiet areas on the plane, like islands or shores on the seething hotbed of energy. These regions have the minor positive-dominant trait and are dotted with bits of flotsam from other planes, including floating citadels, bits of tattered astral haze, and shards of other planes.
There is no air in the Positive Energy Plane. While the plane is not a true vacuum (the positive energy provides the equivalent of normal atmospheric pressure), suffocation is a great danger. Even the fast healing given to all inhabitants of the plane has no effect on suffocation. Travelers on this plane must bring their own atmosphere or forgo breathing while here.
Similarly, food and drink do not exist naturally on the Positive Energy Plane, and subdual damage from starvation and thirst is not automatically healed either.