After the attention of the first riddle, wanted to post a simpler and distracting riddle. Good luck
So sharp that I can execute what you want me to.
Will guide you the way, and when needed I will split your troubles in your head
So valuable, that you always fight for me
Standing at the crossroads, waiting for you to find me
Hint:
I am (sometimes) above a wizard's head
hint2:
I am a single word with multiple meanings