He who rises

Mutantous offspring await a second coming
Tentacled malevolence in bondage
Waiting for the stars to be right
Dark cults rise in adoration
Upon the day he awakens
Spreading like infection
Cthulhu's children plot deep in shadows
Blind worship lead to global death
His kingdom finally come
Arise!
Dead but dreaming, he lies within the depths
Inside a crypt of tentacled king
Interstellar twin of the Hebrew Leviathan
The beast 666 will be released
His slithering eminence will rise from slumber
And he will awake to burn down the world and smash rubble to ash
The ocean will become a cathedral
The world will crumble to dust
And he will sit upon a throne
Made from society's bones
As the sky turns black
And a world comes to an end