Inside the circle a conclave of mushroom like creatures sing and dance. They vary widely in color, from white to tan to dark brown, but they always have red or purple caps and speckles. A campestri moves by manipulating the mycelium that grows out of the base of its stem and supports it.

Using body language, these cute, mushroom-like creatures urge the characters to join in their reverie.

As if she has done this dance 1000 times before, Piccolo jumps right in. She seems to know the moves naturally, or through her tremendous agility. She smiles and has a great time, seeming to have no concerns in the world. Of course, she pulls out her tiny piccolo and plays along, harmonizing, then pulls a small drum out of her bag and plays that while keeping step with the others. (Performance 19)

Uriel:

Speaking to the creatures (Using his Tongue of the Sun and Moon ability), Uriel also joins in if he assesses their intent to be benign (passive Inaight 20).

The little mushrooms go wild. They absolutely love it. As if it weren't already hyper-real, the colors of the feywike become even more absurd, even new colors reveal themselves to the semi demigoddess as she develops a true seeing of the world around her (for 24 hours). 

Piccolo keeps dancing and gets more hyped up as the mushroom creatures do. She does not have a care in the world!
She plays a tune still dancing with them of ("an image of her trying to find a unicorn")

They happily lean on unison to the north, pointing the way across the narrow river. 

Drain:

Drain watches the dance with a wry grin.  He's never danced before himself and will watch with curiosity without joining.

You follow the river to the north. Mist drifts over the surface of a small lake. Forested crags line the shore on one side of the lake, and mossy rocks protrude from the shallows. Near the center of the lake is a rocky islet.

Those who try to come within 1,000 feet of the pool’s shoreline find that any path they take through the forest leads them back to where they started, and flying creatures find themselves unintentionally veering off course.

(Does the true sight help Piccolo find a clear path?)

Officially: no. The jabberwok has true sight, yet it is always turned away by the lake's magic, which is referred to as a "glamour" without much further detail. Side note: as a fey creature, Sparhawk, (a bugbear), gets AD on stealth checks near the lake.

You do notice something though... Hopping through the brush, you see a hare with a horn.  You're might recognize it as an al-mi'raj. It's fur looks damp, as if it's been splashing about recently. 

Piccolo greets the al-mi'raj with a brief tune and offers it a bit of fruit from her bag. She seems completely at home in these out of castle elements.

Trisk watches his little friend join the other little creatures dance with an expression of glee on his face. He almost joins in but stops himself as he feels his size would make him look awkward next to the smaller creatures dancing.

When the al-mi'raj appears Trisk will join Piccolo is greeting it, speaking calmly even if it doesn't understand or speak a language, and using Prestidigitation to dry it's fur so it won't catch cold.

"Hello little one, are you hungry? You got a little wet. I can help dry you off."

Persuasion: 18 

The thing darts off through the hedges and you hear splashing as it dashes along the edge of the water that you can't seem to reach. 

“Mhh that’s interesting” Sam says “thou we are in a weird place” 

Piccolo sits down, looking at the group and raising her hands.

She begins playing a calm melodic melody. Maybe the Unicorn will come to them.

Despite the calming music and serene sounds of nature, an inescapable disquiet waxes among you. You slowly get the feeling you are being watched. 

Uriel:

"What's the plan when we find the unicorn?  Asking for help to free those frozen in time seems okay, but the man sitting on the throne seemed more the type to butcher a unicorn for its horn rather than ask for its help," asks Uriel.

Piccolo shrugs, plays a few notes, (“image of piccolo hugging the unicorn and smiling, but shaking her head at the ugly throne man”)

"I agree with Piccolo, we should befriend a unicorn if we find one."

Trisk will try to make eye contact with as many of the group as he can while saying, "If any here have designs on harming one just for a chance at it's horn then maybe we should part ways now. We don't have to agree on everything but we should generally be on the same page when it comes to the bigger issues."

Drain:

"If the unicorn won't give up it's horn, perhaps it can tell us how to break the spell, or come with us."  Drain will cast detect magic again and walk up and down the shoreline at a distance, looking for tracks as well.  He will also call up his familiar to check from the air.