Cobbled Bruiser

A cobbled bruiser's tremorsense is a precise sense out to 40 feet and an imprecise sense out to 80 feet. A cobbled bruiser can't sense anything beyond the range of its tremorsense. Tremorsense allows a monster to feel the vibrations through a solid surface caused by movement. It is an imprecise sense with a limited range (listed in the ability). Tremorsense functions only if the monster is on the same surface as the subject, and only if the subject is moving along (or burrowing through) the surface.

The cobbled bruiser is immune to damage dealt by allied cobbleswarms.

Trigger The cobbled bruiser is reduced to 0 Hit Points Effect A Weakened Cobbleswarm spawns in the space the cobbled bruiser previously occupied, or the nearest adjacent space if there is already a cobbleswarm occupying that space. It is slightly damaged compared to a normal Cobbleswarm; its AC is 14 instead of 16, and it has one-half of its usual maximum Hit Points (10 instead of 20).

(1d8+7) bludgeoning, DC 20 fortitude The monster deals the listed amount of damage to any number of creatures Grabbed or Restrained by it. Each of those creatures can attempt a basic Fortitude save with the listed DC.

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty. The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.