Answer:
The eight of us go forth not back to protect our king from a foes attack.
It's shorter than the rest, but when you're happy, you raise it up like it's the best. What is it?
How can you throw a ball as hard as you can, to only have it come back to you, even if it doesnβt bounce off anything?
What grows when it eats, but dies when it drinks?
I am a king but also a common device of measure. What am I?
My days are numbered. What am I?