Answer:
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
I am a tool for fairies.
The more holes you cover the lower I go.
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
What goes all around the world but never leaves its corner?
Both a currency and an antlered male. What is it?