Answer:
I am a precious stone, as clear as a diamond. Though you can walk on water with my power, try to keep me, and I'll vanish in an hour. What am I?
Use me to reward good behavior.
I am bought by the yard but worn by the foot. What am I?
I'm an animal. I love marching. I always wear a tuxedo. What am I?
My full powers come when my makers are dead. I await a heavy hat to put on my head. What am I?
What made Cyclops quit teaching?