Sky Warriors

Gather round the fire children, let this old man tell you a story. You know of the beasts of the forest, of the scorpiad, with its pincers and tail, of the Sabercat with its long teeth, and of the drakes, with their scales hard as stone.
But there is one creature that our people have seldom hunted. The Swarm. Carapaces hard as the drakes, claws as sharp as the sabercat and as many limbs as the scorpiad, they cause grown men nightmares.
They are not often seen, and only in ones or twos, but it is said that once they were as common as the grass we walk upon.
In this time, our ancestors were facing annihilation from the swarm, they flooded across the land like the sweeping of the wind.
Our ancestors prayed to the Allfather that he may save them from destruction. The Allfather looked upon his children's plight and answered.
On tails of fire did salvation arrive, falling from the sky. The Allfather had sent his greatest sons the Sky Warriors.
They were clad in stone that shone like the stars and raised fire from their fingers. They towered over the tallest man.
With conjured fire they swept the land of the swarm, until there was none before them.
And then the Sky Warriors left, called back by the Allfather until they were needed again.
And the swarm was no more.
But the Sky Warriors warned the ancestors. The swarm would come again, and that their descendants must be ready for them.
And so do I impart unto you this story, so must you impart it to your sires and grandsires.
So that the swarm do not rise once more.