Wanna play a riddle & poetry game?

I post a poem/riddle. You guess it and/or post your own poem/riddle.
Simple enough?

Here’s mine:

My teeth of garnet will stain you,
a stain deeper than blood or red red wine.
And I have hundreds of them.

I will lure you into my crumbling house and feed you.
I will own you.
You might lose your soul, your life, your liberty.

I brought winter into this land.
A mother bowed before me to save her only child.

Six of my teeth loosed winter into this world,
Twelve and I could have made it eternal.

Who am I?