Compsognathus Swarm

A boiling swarm of chicken-sized predators that strips a carcass - or a careless traveller - to bone in minutes. Individually harmless, in numbers they are a thousand tiny bites that never stop coming. They flock through fern-thick lowlands and old battlefields, drawn to blood and rot, and they have learned that a sleeping or wounded creature is just a slow meal that hasn't noticed yet.

Swarming Bites: piercing, melee 5 ft, +1 to hit, 1d8+2 piercing in a single roll against everything in its space. Overwhelm: a creature that ends its turn inside the swarm takes an automatic 1d6 piercing, cooldown 1 round.

Swarm: fills a 10-ft space, squeezes through any gap, and resists single-target weapon damage (half) but takes full damage from area effects. Skittering: scatters and reforms, hard to pin down. Senses: Night Vision (60 ft).