Answer:
The 8 of us go forth and back to protect our king from a foes attack
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
I am known for my natural tuxedo and marching
I am a candy that looks like a shepherdβs staff.
What is always coming but never arrives?