The allay forest (+ thematic enchantment)

Since I stumbled across many posts regarding the idea of “magical forests” and such, I wish to present an idea that may please many users.

LORE:

This very rare island would be the home land of allays.
Giving them a natural spawn point would explain how pillagers manage to get their hands on them.

BLOCKS:

The azure tree would be made up of azure leaves and a new type of wood, whose log would be azure on the inside and grey/white on the outside.

Instead of grass we would get something similar, the only difference being its surface (a green tending to azure).

It would also be cool to add an exclusive shiny block to light the island up at night.

Optional: also a thematic flower.

MOBS:

The unique mobs that would spawn within it would be allays, theres no need of adding something new (at most to enhance the “magical” feel, just add a few ascending particles on the new grass or a unicorn).

It would be cool to see azure sheep spawn with higher frequency in it.

No hostile mob should spawn on the island (to make it look like more “sacred”).

STRUCTURE and ENCHANTMENT:

A small temple/cave hosting a library (with the new 1.20 bookshelves) where one of the books would be an enchantment for boots - the long awaited double jump.

Why should it be double jump?

Lore wise it would be something like: “a book that absorbed the magical power of the land of the allays”; allays can fly so maybe it can suit it.

Optional: one of the books would contain the standard galactic alphabet, so the enchantment language.