"It's okay, Cas. Ease up, you're gonna be okay."

His hand doesn't move from Casper's shoulder, but he can't do anything to make it more reassuring. So instead he pulls energy from his dreamcatcher, enough to make a thick lump of goo. "I'm gonna put some shit on you, alright? It's gonna be on your whole neck, so. Try not to freak out."

And he carefully wraps Casper's neck in the healing ectoplasm.