The magus Acumenis, of House Ex Miscellanea, has this to say of the Lou Carcolh in his journal:
It was a vast creature, lumbering and vicious. Oblivious to us as we hid, its head was like a dragon with a beard of tentacles, a mouth of sword-like fangs. Its neck became that of a snail and its body disappeared within an enormous shell. It left a trail of thick slime in its wake, rolling over the broken wagons as if they were nothing. The mule, however, was not so fortunate, and its cries were quickly silenced after the tentacles shot forth and pulled it bleating into that ravenous maw. I can only hope the monster wasn't an immature beast.
Learn more about the Lou Carcolh, its magical qualities and powers, and the Basque folk witches who may or may not be complicit with the beast in Faith & Flame: The Provençal Tribunal sourcebook for Ars Magica Fifth Edition, now available.
Faith & Flame was written by Erik Dahl, Mark Faulkner, Lachie Hayes, Ben McFarland, and Christian Jensen Romer. Cover illustration by Christian St. Pierre; interior illustration by Jason Cole, Jenna Fowler, Susan Knowles, Jeff Menges, and Christian St. Pierre, with cartography by Matt Ryan.