How to incorporate the Dream Plane into Kalashtar PC playstyle (such as maybe multiclassing) [closed]

I play a Kalashtar War Domain Cleric and am interested in expanding on the Kalashtar’s connection to the Quori more.

Not looking for any particular solution, more of an interesting way to incorporate the DreamScape and Kalashtar lore with the Quori into the play and story of the campaign more.

Open to any wild ideas

What happens if a kalashtar becomes possessed?

Kalashtar have Quori spirits inside of them. How would the spirit react to being possessed. If there are no game mechanics that could be added, could any flavor be added to spice up the campaign in the event of a possessed kalashtar? Eberron: Rising from the Last War says that there can be adverse effects if a kalashtar ends up being an evil alignment, would this apply to being possessed by an evil PC?

Can elves, half-elves, warforged, and/or kalashtar be affected by Dream of the Blue Veil?

The Fey Ancestry racial trait shared by elves (Player’s Handbook, p. 23) and half-elves (p. 39) states “magic can’t put you to sleep.” Warforged’s Constructed Resilience trait is similar: “You don’t need to sleep, and magic can’t put you to sleep” (Eberron: Rising from the Last War, p. 36). Kalashtar have a racial trait called Severed from Dreams, which reads (p. 31):

Kalashtar sleep, but they don’t connect to the plane of dreams as other creatures do. Instead, their minds draw from the memories of their otherworldly spirit while they sleep. As such, you are immune to spells and other magical effects that require you to dream, like dream, but not to spells and other magical effects that put you to sleep, like sleep.

The spell dream of the blue veil begins with the following paragraph (Tasha’s Cauldron of Everything, p. 106; emphasis mine):

You and up to eight willing creatures within range fall unconscious for the spell’s duration and experi­ence visions of another world on the Material Plane, such as Oerth, Toril, Krynn, or Eberron. If the spell reaches its full duration, the visions conclude with each of you encountering and pulling back a mys­terious blue curtain. The spell then ends with you mentally and physically transported to the world that was in the visions.

A sidebar next to the spell reads (p. 106, emphasis mine):

Transit between [different worlds on the Material Plane] is rare but not im­possible and can be accomplished in various ways. […One] method is the Dream of Other Worlds; trav­elers fall into a deep slumber and dream themselves into a new realm. The spell dream of the blue veil em­ploys this method of transit.

My question is, can elves, half-elves, warforged, and/or kalashtar be affected by dream of the blue veil?

My current interpretation of RAW is that the answer is “no” for all four creatures. The sidebar outright states that dream of the blue veil induces “slumber” (thus excluding elves, half-elves, and warforged from being affected) and causes its targets to dream (excluding kalashtar). However, there are a few reasons I might be wrong.

Nowhere in the spell’s actual text do the words “sleep,” “slumber,” or “dream” appear. It refers only to creatures becoming “unconscious” and experiencing “visions.” Contrast this with sleep, which “sends creatures into a magical slumber” and refers to its affected targets as “sleepers” (PHB, p. 276). Contrast also with dream, which “shapes a creature’s dreams,” doesn’t affect a target until it’s “asleep,” and explicitly states that “Creatures that don’t sleep, such as elves, can’t be contacted by this spell” (p. 236).

Commenters in this Reddit thread largely agree that the lack of sleep- and dream-related language in the spell’s text means RAW is that kalashtar can be affected. One commenter points out the similarity to the spell catnap, which can affect elves.

Maybe the Tasha’s Cauldron sidebar, like the title of the spell, is simply some extra lore that doesn’t affect gameplay. However, I see no reason to exclude sidebars from RAW. Many important rules, such as the ones for hiding (PHB, p. 177) and some rules governing wizards’ spellbooks (p. 114), appear only in sidebars.

Another Reddit commenter points to “Spell Spotlight: Dream of the Blue Veil,” a D&D Beyond article which contains the following sentence:

A kalashtar wizard who uses the dream [created by dream of the blue veil] to flee the agents of the Dreaming Dark by escaping to Krynn may buy themself enough time to gather new allies, new resources, and return to Eberron with a bold new plan to defeat their enemies.

This obviously implies that kalashtar can be affected by the spell. I imagine that this could be an oversight, and I don’t especially see why this article should be considered RAW. But again, I could be wrong.

What happens if a kalashtar eats a dream pastry?

According to Eberron: Rising from the Last War:

Kalashtar sleep, but they don’t connect to the plane of dreams as other creatures do. Instead, their minds draw from the memories of their otherworldly spirit while they sleep. As such, you are immune to spells and other magical effects that require you to dream, like dream, but not to spells and other magical effects that put you to sleep, like sleep.

Meanwhile, for dream pastries (Curse of Strahd, chap. 6):

A creature that eats one in its entirety must suc­ceed on a DC 16 Constitution saving throw or fall into a trance that lasts for 1d4 + 4 hours, during which time the creature is incapacitated and has a speed of O feet. The trance ends if the affected creature takes any dam­age or if someone else uses an action to shake the crea­ture out of its stupor.

While in the trance, the creature dreams of being in some joyous place, far removed from the evils of the world. The places and characters in the dream are vivid and believable, and when the dream ends, the affected creature experiences a longing to return to the place.

So what happens if a kalashtar eats a dream pastry? Obviously they don’t dream. Do they fall into the trance? If so, what do they experience?

Alternately put, does the dream pastry’s trance require the dream, or are trance and dream mechanically separate (though related)? If they are separate, what happens to a kalashtar when they eat one?

What racial features can a Kalashtar use while wildshaped?

As the title states, I want to know which racial features, if any, of the kalashtar are usable in wildshaped form.

The traits are named as follows: Dual Mind, Mental Discipline, Mind Link, Severed from Dreams

Both of these questions are related:
How do I determine if a Racial Trait applies to Wildshape?
Does a wildshaped druid retain his/her racial resistances?

This was a question I thought of when looking at this question, as a way of communicating to the Bestial Spirit: Is it possible to combine Summon Beastial Spirit spell and Wildshape to travel by air?

Can there be more than 67 kalashtar in existence at once?

Kalashtar were originally formed when 67 adaran monks fused their being with quori spirits from Dal Quor. All descriptions of the race, as well as their naming convention suggests a 1:1 ratio of human:quori, ie. that in one kalashtar there is exactly one quori and one human.

Combining these two statements could lead one to believe that the number of kalashtar is limited by the number of quori that escaped Dal Quor at that time. Is this so? I see no mention of such a cap.

If there can be more than 67 kalashtar at a time, where do the quori come from? Do they also reproduce? Do new ones escape Dal Quor?