Death-bringing
Creature
Inoculates everything but hope

Asphyxia's generator
Spreading fast into the world
Defending spaces
Strangling prays
Avenging earth's corrosion

Vertebrate
Terrestrial
In the dead of night
It's nature's call
Cautionary need

Life's bound to decline
System shutdown
Darkened sight
Resourceful evil
Emptiness
One's word and pride
In a feral state, it chokes
Poisonous fangs
Dangerous tongue

Snake head

Swallowing whole
Lurking evil
The silent hiss