Opinions on a homebrew magical trap for my Fey palace

[Albions_Angel]

Hi all, I wondered what you thought of this.

The Dancers
Enchantment (compulsion) [mind affecting], Illusion (glamor)
Will Negates (see text)

A group of beautiful, half-fey, half-mortal creatures dance in fluid, graceful circles. The sound of music and laughter fill the air. You feel compelled to join in the wonder and excitement they are obviously feeling. Before you can stop yourself, you have entered the dance. You are already lost.

This spell is formed by a series of dancing creatures in the Summer Court. Lively music and bright, clear laughter can be heard from a considerable distance. The creatures appear to be beautiful hybrids of Fey and Mortal, or else to be exceedingly beautiful specimens of their race. Any mortal, intelligent creature within 120 feet that can see the dancers must make a Will save DC 12 or become enthralled. A successful save at this point breaks both the enchantment and the illusion. The creatures are revealed to be gaunt, emaciated humanoid creatures of varying ages with fixed, stretched smiles and blank, staring eyes. The music becomes twisted, with discordant notes, while the laughter becomes false and weak. For every 30 feet closer to the dancers, the save DC increases by 2.
A character that fails their save does not see through the illusion, and becomes immediately enthralled. The character must make only a single move action per turn directly towards the dancers and can take no other action. She takes a -4 penalty to AC and loses her Dexterity to AC. If her path is blocked, she will take the shortest reasonable detour. She does not act violently to creatures in her way. If she reaches the dancers, she joins the dance. She can be shaken awake as a full round action. Doing so breaks the enchantment and the illusion. This can be done before she enters the dance itself, or so long as she is not yet permanently enthralled.
After 24 hours of dancing, she makes another will save. A success means she dances for another day and repeats the save. On a failed save, she falls completely under the sway of the dancers and becomes part of the illusion and enchantment, forever trapped. The dance does not fatigue her, regardless of the length of time danced, nor does she suffer from ill effects due to lack of food or water. She is immune to aging.
A character that makes the save or is rescued is immune to The Dancers for 24 hours.

Lore: The dancers were once travellers who became lost in Fey inhabited regions. These were the lucky ones, “rescued” by courtiers of the Summer Lady. The dance was created to entertain and sustain the lost souls, preventing them from leaving and falling victim to other dangers. When any single dance exceeds more than 20 or 30 participants, the group is split and led to different sections of the summer palace.
The courtiers of the Summer Lady see no issues with the dance, and believe they have created a perfect life for its victims. This only demonstrates the twisted nature of Fey morality.

[Extra Anchovies]

So it boils down to this:
1. Everyone makes a Will save. If everyone fails, 24 hours are wasted.
2. Everyone makes another Will save. If everyone fails, another 24 hours are wasted.
3. Everyone makes another Will save. If everyone fails, TPK.
If anyone passes either of the first two saves, they can shake the others and be done with it. If at least one but not all of them pass the third save, they can get the others out by using antimagic of some sort.

On a mechanical level, it's an easily resisted save-or-lose. That's not all that interesting, but the fluff is cool so this could make for a neat interactive setpiece.

If the dancers are real, the glamer and enchantment would be entirely separate effects. Could be relevant.

The "true form" of the dancers seems contradictory with the fact that they don't need food or water and don't age. If you want something to seem off about them to PCs who make their saves, perhaps you could describe them as having almost mechanical movements and laughs, as if they're unable to do anything but dance? On a similar note, the fey don't have any reason to use distorted music, so it's kind of odd that you included that detail.

It might be interesting if creatures removed from the dance instantly age an appropriate amount for the time that has passed - it would be a bit of cruel irony if the PCs dispelled the effect to free the other dancers and they all withered and dropped dead.

[Albions_Angel]

Yeah that's more or less it. It's very much a set piece rather than a real threat. At levels where they are going to fail the save, they will be accompanied in the palace. If they choose to storm it at epic levels, it becomes a non issue.

I did forget that heal, wish etc can save a fully ensnared victim. Basing it off the meaniads from fiend folio or whatever it is.

The dancers are kept alive and don't suffer penalties from lack of food. But they do grow thin and haggard. The spell sustains them. They are a variety of ages because they were a variety of ages when they were rescued.