The Phoenix Diadem (Patreon)

Portals between worlds are crafted from potent materials in places where the energies of the world intersect with that of other places. Sometimes these ‘ley lines’ are conveniently found where the sky meets the earth and the portals can be built on the surface of the world itself.

But more often they meet in places deep or high. And thus we build “dungeons”.

The Phoenix Diadem is such a place – built beneath the world and linking it to other places. But it is not just a portal; it serves as a prison to those whom it calls forth. There is insufficient space here for the great birds who fly in the liminal worlds between the planes of water and air (referred to as the para-elemental planes by some sages learned in the ways of the many worlds). Within the diadem they find themselves trapped, forced to subservience in order to be able to return to the cold skies of their world.

Even without the spells and rituals to summon forth the great para-elemental birds, the placement and design of the Phoenix Diadem allows things to “leak through” between worlds. Smaller elemental phenomenon occasionally breach into the diadem, and some unfortunates have also been lost here, having “successfully” pushed through from the Prime to the homes of these creatures.

 https://dysonlogos.blog/2019/08/03/diadem/