The  Prodigious Several Shadows

 Beware the Several Shadows coming in
You'll know their near when the lights din.
They reach in and rip your bodies skin,
ripping you skin off like cat scratching post,
Insufferable pain ravages most.
They will slide down your throat.
One scoops out the inside of your stomach, to make a new coat.
The brother of First pull at bones, to make the bones into a boat.
A cousin for three scratches the eyes, to make a moat.
Another pushes on your intestines, to make more room.
The fourth one rips your ribs away, to make himself a tomb.
The fifth one goes to the brain and starts to pop blood vessels
The sixth goes into the lungs, to have a home where he nestles.
The final one goes to the heart pumping it, to keep you living
The Several Shadows are slowly keeping you as they're coming.