Day Three or four? Mushrooms are mean

Crystals and mushrooms are unpredictable and not wise to touch.
Mouse statues could be useful as tracking devices if we planted cheese on persons of interest.
The stones here tell stories I can't hear.
Citron is small and knows things I cannot, I am impatient to return to my home and continue my studies yet if I leave I will lose more knowledge than I could find in years in a university hall.
Rio is singing a song:
"The metal man is always down
He doesn't appreciate me playing the clown
If I could see his face I bet it’d frown"
 
We meet a large slug, a giant toad, and two elven persons.
 
"When I went out walking in the woods I met a pretty sluggy guy
He was a rather pleasant fellow despite his big buggy eyes"
 
She wrote a song about me:
 
"There once was a man of noble birth who into the ruins he Strode
With fingers itching from ill fate he did a mushroom Poke
But alack it was a really bad idea and he for a full minute Froze
It was a pretty stupid call the sullen metal man Croaked"
 
Slug man's throne is bouncy