Life is a metronome

You never know what your gonna get

It could be good

It could be bad

It could ruin

It could heal

Life is just one big surprise

You just have yo be lucky

Life can burn

Life can badly poison

You just gotta be cross your heart

And be lucky

Any true pokemon fans will get this
Metronome is a pokemon move where the user wags it's finger and it gets a random move. You never know what your next move is.