"This place suppresses abilities," Sasuke said shortly. "And they can alter the magnitude of the suppression to suit their purposes."

Like his stronger Sharingan.

"If your eye tells you what is and isn't human, what is the staff?" Sasuke hadn't had a chance to look at their chakra, not even during the brief time he'd had Sharingan activated in the cafeteria, but now that he thought about it, it might be worth a try eventually.