Legs
Headmaster Leopold immediately sensed that the seal was slowly weakening once more, causing the frown on his wrinkled face to deepen. How formidable could this enemy be that they were capable of such a thing? Leopold might just be a member of a small remnant branch of the Zu Clan, but he was well aware of just how powerful that seal was himself. If the enemy was so powerful, he suddenly didn't have the confidence that he could win even with his current cultivation.
Still, he could only redouble his efforts. He had wasted so many years of his life on this pitiful Mortal Plane, valuable cultivation time was wasted. Even if he had to put his life on the line, what did it matter? If you weren't willing to risk everything, could you even call yourself a cultivator?!