They're Demons

They're demons (your monsters) and they're swimming in blood
Hiding in the shallows of nightmares of a decaying flooded wood
Enthralled by the horror, you dreamt you were drowning in water
Yearning for it to end, but trapped in the nightmares of slaughter
Randomise movement, of the ephemeral, vermilion reptilian eyes
Evading your awakening, they're luring you to where insanity plies
Deeper, you're the sleeper, in rippling blood and writhing maggots
Embalming you slowly are the morticians of demonic dead abbots
Mummified dreamer, as serene as a mere, you should have flown
Out of your darkest 'mare where you drowned, supine over prone
Now though you're in a place where the water courses bloody red
Swimming with monsters, they're demons, your demons are dead