SCP-0

Prepare for the end of the world
This SCP is like no other it has no form it is a shapeshifter.
It comes to worlds as a black cloud snd then splits it many other clouds those that are barely seen…
Those clouds go inside the planet's inhabitants and lay the eggs inside them. And when the time comes, the eggs hatch and the newborn monster rips the organism apart. Then it repeats the process until the only living things on that planet are monsters, and the ground turned black and the trees turned black and only then the black clouds form together to form a massive one and swallow the planet whole.