I used to get those regularly as a young kid and they were scary as fuck.
It's been at least 15 years or so, but I still vividly remember the sheer terror and the imagined pain I felt during those dreams.
Fade in
I'm laying under the covers
Feeling of dread washes over me
Hide head under the covers
Am totally safe
Accidentally poke a body part out from under the covers
Clammy hands grab me
Evil laughter
Covers ripped off
More evil laughter
A fucking red scaly demon with short horns is next to my bed
Try to run - can't
Demon starts stabbing me with claws
Is very painful
Try to scream - can't
Demon stabs me some more
So much pain
More of those lizards come out of my closet (which conveniently never shuts irl)
More claws penetrating my body
Break free
Run out of bed room door
Bedroom becomes a blackhole sucking me back in
Struggle to the stairs
Pull my body inch by inch down the stairs using my hands
Get sucked back in my room anyway
Try to scream for help - is a whimper so no one hears
More stabbing
Try to run - can't
Wake up drenched in sweat and heavy breathing with brain on 'full alert there is danger!!!' mode, and nerves firing.
Cry myself to sleep under the covers
Fade out
Never had those again when I started puberty, and never want to ever have them again.