Answer:
What gets sharper the more you use it?
The faster you run the harder it is to catch me
I am easy to waste and unstoppable
Better touch me before you proceed to second. What am I?
I am a bow that can never be tied or broken but can disappear. What am I?
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.