Really Big Worm
The jormungar have a spawnmother in the caverns below. We call her Rattlebore - a name that was gifted to her by an adventurer from the Plaguelands. I saw her only briefly as I was fighting off their initial onslaught - she is large enough to make even my icy bones shiver. This cavern will not be ours until she is removed from it.
Gather your friends and end this.