"I don't expect anything of you, Robin," Castiel assures, digging a vial of blood and a piece of paper with a carefully drawn sigil out of his pocket and setting them down on the coffee table.

"But this affects Ishiah and I did not want anyone hiding anything from you. That sigil, drawn with my blood by an angelic being and a short incantation will damage my grace enough that I should be all but human. If it is not enough to undo any memory I am locked within, it should at least render me easily incapacitated."

He sits back, resting a careful hand on Dean's leg. "You have also mentioned reapers as a potential resource, Ishiah. I would be interested in hearing your opinion."