That was that. This was a simple test of perception. If Castiel couldn't handle it... it wouldn't really matter. She was right about one thing, shrouding wasn't an ability that priests had. Warding wasn't either. It was a piece of paper with scribbling on it that you slapped on an inanimate object and it disappeared. It is a particularly weak ward and can easily be seen through, with the right kind of nudge. Any tweak to in the eyes focus would bring it into sight. A shiny stone like the one he had placed would be easy to see.
"Take a moment to rest while I speak to your team mate." Cayenne told his remaining students and walked after Castiel.

After a few minutes of searching, he found her leaning against the wall, looking just as bad as Claude had.
"Castiel, I have seen strong and skilled priests get themselves killed because they couldn't work in a team. I would hate to see that become of you. You are strong, but your skills need to be refined. I know you think you are beyond your team, but you need each other. When the time comes, you will understand why. There is strength in saving lives, too. You simply have to choose to want it." Cayenne turned to walk away, "If you decide to continue working with us, we will be meeting in the training yard with the others tomorrow morning."
Quietly, he walked back to his waiting trainees.
"Claude, do you feel up to giving it another go?"