Answer:
What two things can you never eat for breakfast?
Kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all. What am I?
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
Lives in winter, dies in summer, and grows with its roots upward. What is it?
I am the key that is the hardest to turn
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.