Z is the end

It burns so slow.
It leaves nothing behind.
Charred remains is all that can be seen
Of where it has been.
If it goes out
It won't be soon enough.
The longer it is alight
The more it grows.
A black cloud follows behind it
Like a lost sheep.
If you could see it
It would show you the world, but
It is as black jet and won't be seen.
It keeps everyone asleep
While it kills your memories,
But it will spare the insane.
They suffer an eternity of dreams.
You can only stop it by suicide.
Slice the black flame
And it will all end.