Summary Of The Mira Feathers' Powers

The Mira Feathers are like Chaos Emeralds (those troublesome emeralds don't exist in Frost's part of the world, if they came in they would explode along with both worlds) as they have a Master one and many, just as powerful when combined, and just seven could make one almost invincible when fused with the heart. There also is a dark counterpart of the Master, although I am personally not sure if it applies to the Chaos Emeralds.

Normal Chaos Emeralds.

Master Emerald.

I don't have images for the normal Mira Feathers, but I do have an image of the Master Mira Feather, also known as the Elemental Feather and the Mira Feather of Land, Sea, and Sky.
Just as the power rings seem to be by-products of the Chaos Emeralds, the Spirit Stones are the by-products of Mira Feathers.

Power ring.

Apparently, the Animal Jam Spirit Stones look a lot like the Native American versions, only they are actually ancient crystals.
So, anyway, Mira feathers can:
Turn anyone into a brief invincible form when combined with six others
Can be temporarily poisoned to help only evil beings
Fourteen of them can actually make anyone fully invincible for an hour, not just several minutes.
When used correctly, make very good spells and potions
Restore life and color to any sort of dark area
Can create almost anything
Yep, that's it. Here's a short summary of the Elemental Feather.

Mira's Feather Of Land, Sea and Sky

This is a picture of Mira's most important magic feather, the Elemental feather. It glowed golden, and had the first DNA of every animal in it. The feather tendrils are of dirt and grass, and the middle part the sea. The golden aura symbolizes the sky, of course. Nobody knows where the feather is, but Frost thinks she may have it...