Answer:
I am a seed with three letters in my name. Take away the last two and I still sound the same.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
If you have it, you donβt share it. If you share it, you donβt have it. What is it?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I am filled with garb the price is free. Just return what you don't need.
What made Cyclops quit teaching?