Cas seems kinda pissed off by this
Cas: Whatever.
He does seem a little less pissed when Ren says he's gonna try, he's curious. He watches, fascinated
Cas: Woah...
He seems genuinely impressed
Cas: ...
Cas: quietly the fuck...?
Cas turns into a mouse and slips away. He really doesn't wanna stay there. He starts to follow Ren.
