They slunkered toward the pavement, murmuring their plans amongst themselves.  They transmitted low frequency vibrations into the ground, marshaling the forces around them.  There was no leader within the group,
for all knew what must be done.

To punctuate the gravity of their task, one of the Creatures periodically
pounded fist to palm and muttered, “As above, not so below.”

And the others replied, “This will not do.”