I've got a sketchbook full of beasties I've been drawing over the winter break. I'm looking forward to writing up descriptions for them and cooking up some new creatures to challenge your players with. This vicious little monster is inspired by a documentary on the Amazon I recently watched. I was wondering what a piranha would look like through the dark mirror of DnD and imagined this swarming horror. The entangle + swarm mechanic might need a little more massaging to get working right, this version may be a bit extreme. Or not! Depending on how clever and powerful the characters are.
Atk ML 1d4
Special: entangle strike
The underclawed prana appears to be a normal, if somewhat spiky, fish with spindly legs. They tend to live in schools of 5-20 (1d4x5) and lurk in murky waters, stagnant pools deep in dungeons, or in primordial swamps. They can survive for short periods out of water as they crawl to a new body of water.
These ravenous creatures are deadly in close proximity (within 5’) as they can shoot out a clawed tongue to entangle potential prey. On a hit the victim must make a save (add Dex bonus) to avoid entanglement. If the save is failed they will have one round to attempt to beat off the prana, any successful melee attack will do.
If still entangled after one round the rest of the school will then swarm upon the victim and quickly devour it in 2-5 rounds. They may take longer to chew through metal armor (add 2d6 rounds for chainmail or above), but anything less will not deter them.