md arts

A summary:
After Amara ripped Lucifer from Castiel’s body he left behind a piece of his grace.
At first, Castiel hadn’t noticed it. He is just more aggressive, more confident now.
But yet Cas has felt, something is raging inside of his head. He realizes it’s the remain of Lucifer. And he asks Dean to extract it, but after he extracts Cas’s own grace.