D&D 5E Speculation on the missing quasielemental planes

[wingsandsword]

So how exactly is a Plane of Time different from all the others? Are things MORE sequential in the plane of time?

The Plane of Time (a.ka. the Demiplane of Time or Temporal Prime) is the medium by which time travel is possible. It's not a "plane" in the normal sense used by planar travelers (you can't get there through any known Plane Shift spell, for example, although ethereal curtains into it aren't unknown), more of an alternate dimension, a state of existing and perceiving the universe where time exists as a physical dimension, where you can go back or forward in time by physically travelling in a specific direction. It overlaps all places in the multiverse, any place where time flows, the Plane of Time (also known as Temporal Prime) exists.

It appears as a vast dark void filled with a thick silver-grey mist, the only features being bright cords criss-crossing the misty void that represent the lives of mortal beings (and the occasional temporal vortex, which is best avoided). By moving to the right place in the plane and re-emerging back to normal space, you can travel through time, but there are a lot of restrictions and hazards to the process, and the spells to do so are exclusive to chronomancers and in many crystal spheres, like Toril, the Gods do NOT look kindly on people trying to change the timeline and use both their avatars and elite clerics to protect the timeline, so time travelers need to proceed with extreme caution on those worlds.

(That's going by the nature of the Plane of Time from the Chronomancer supplement, which first discussed the concept and definitely discussed it at the greatest length, but was at least mentioned in passing in some Planescape and Forgotten Realms materials and in the 3e Manual of the Planes)

Demiplane of Time

The Demiplane of Time,[5][6] or Demi-Plane of Time,[1][7] also called the Plane of Time,[5] Temporal Energy Plane,[6] Time Plane[8] or the Temporal Prime,[5] was a demiplane[note 1][9] of the Ethereal Plane.[1][4] The Demiplane of Time was an extradimensional space that could allow travelers to...

forgottenrealms.fandom.com

 

[Samloyal23]

The Plane of Shadow is the negative opposite of the Plane of Mirrors. They are both interactions between Energy Planes and the Prime that have distorted forms based on shapes in the Prime. How does a Plane of Time interact with other planes? Is it bridge like the Yggrdrasil or a full plane? It is really an Inner Plane?