Guess the Warrior Cat!

[Joe Goldberg]

I think so^^

[yeentei]

Stonefur or Mistyfoot? D:

[christine,]

It's Half Moon. You know, the Ancient? First Stoneteller? Anyways, here is another.

I was ripped in half.
Wanting the Thunderstorm to envelop me,
but hanging on to the Oak.
Someone wanted to take over the Sun- which is a star.
This someone was sharp, sharp as a thistle.
My kits, my precious kits, were lost to a River, living there, never knowing me.
I have an adopted kit, he is flame, brighter than I am, the sky. He rules the Thunderstorm like a Star.
Who am I?

[christine,]

bump

[christine,]

bump

[border collies.]

Bluestar?