What am I?

I have three heads. Cut off one, I become stronger. Cut off two, I become ten. What am I?

related riddles

I move without wings, between silken strings. I leave as you find my substance behind. What am I?

I have two legs, but they only touch the ground while I'm at rest. What am I?

I am a daily ritual involving using a metal tool on the body. What am I?