The Threader

They say he can patch, mend, and erase all of existence. That he controls the universe with a single needle and thread. He appears to few, and in exchange of a story, he will stitch them something new.
They say that the things he stitches together, the things he brings to life, are more beautiful and more deviant than one could ever possibly imagine. Created by his touch, they remain immortal, yet walk without hearts and feel without souls. They transcend beyond this world.
And they say that his last creation, his last child, is dying.