The Feywild

The realm of mercurial deal makers, wisened elders from millennia in the past, curious tricksters, and malevolent interlopers, the Feywild is a sprawling and vast domain within the cosmology of Edda. Full of wide, winding, and shifting forests, it's a realm of plant creatures, various unique and strange monsters, as well as the entirety of the Fey people.
In terms of distance according to The Planar Star Map, the Feywild is the closest distinct Plane to the Material Realm. This produces many areas where the energy and life of the Feywild seep into the material, in ways that can enrich the land while bringing potential harm. But it also garners a close connection between the material and the Fey, which can be taken advantage of in many ways.
Within the Feywild, there are 17 distinct realms, all of which exist vaguely on top of the Material Plane, as the borders and domains of the Feywild are not exactly set in stone. There is a realm created by each of The God-Fae, godly beings that are responsible for the creation of all Fey creatures. The ones responsible for ruling the plane in the God-Fae's absence are their Archfae, powerful beings that preside over a section of the God-Fae's realm and represent some aspect of their authority.   Most of the ruling work is done by the Archfae, and they also are the ones who create the creatures and faeries of the realm. However, a group of Fae that is not aligned with the God-Fae at all, but instead arose from and are enriched by the leylines present on the Feywild, also exists and rules over their own court. This group exists separate from the 17 realms, and can only be accessed in very limited forms, such as an invitation, a contract, or by finding the right path when the veils are thinner, such as on Veilnight.
There also exists a strange legend that many mages still debate as fact to this day, the presence of a large ship sailing through the sky of the Feywild, said to be helmed by a captain known as Annwn le Fay and can give safe passage through the Feywild.

Geography

The Feywild is a large habitat of natural life. Trees, flowers, bushes, vines, moss, all of it grows in plenty within the Fewild, and the waters that fall from their springs are a coveted resource by those on the material realm. Each domain has its own type of land and different effects, but all of them are pristine and healthy lands, as environmentally rich as they could possibly be.

Ecosystem

Due to being entirely magical, and many would say ephemeral, place the ecosystem of the Feywild doesn't function the same as the forests on the material. However, the wellbeing of the forests and the shape of the domain is dependant on the Archfae that rules over it, as well as being maintained by the various Fae that they create to do so. If an Archfae were to be deposed, as they cannot truly die, the land would undergo great changes and be at risk for cruel harvesting or destruction.

Ecosystem Cycles

Every 100 years, the Feywild undergoes the Ephemeral Reconstitution, where the boundaries and rulership of the realms can be contested and changed. Archfae who are more ambitious than others can use this time to expand their specific sections of domains, or lesser Fae can attempt to depose their Archfae and ascend in their place. 
On a more frequent note, Fae who exist closer to the Material Plane are affected by the passing of the seasons there, as they're attuned to the natural energy of the realm. This can create physical or magical changes for those Fae, while creating some specific types of Fae on the Material Plane for the different seasons, such as Snow Sprites in the Winter and Sun Rays in the Summer.

Localized Phenomena

Not a day goes by where the Feywild doesn't experience some kind of strange phenomena. In fact, a day where nothing changes in the feywild is the strangest of all. However, on the Material Plane, there are occasions where the energy of the feywild will blend with a particularly rough torrent of mana in the Material Plane, creating what's known as a Weave-Knot, which can transport Fae to the Feywild, or if controlled to a secure Demiplane.

Maps

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  The Feywild

  The map of the domains of The God-Fae, and the Archfae who are under them.

Alternative Name(s)

Dancing Wilds, Fortune's Home, Prismatic Land

Type

Dimensional plane

Location under

The Planar Star Map

Ruling/Owning Rank

Seelie Queen