Mystery

As dark as coal
As black as night
My love for Magic Eight
Will give you quite a fright

Its answers are so wise
It has a mind for itself
I will never ever sell it
Even though it would give me wealth

A ball that's not for bouncing
An Eight that's not for cake
Anybody who says it dull
I will hit them with a rake!

I saved its life
from the scary gloom
It was brave of me to enter
My Uncle's messy full-of-junk room!

Why it's a Magic Eight ball.