A mutation that grows more limbs into the victim and curls them all up into a big giant ball, in this form, the mutated can jump and bounce around the map. If it hits a living creature, it will crush its bones and leave a puddle of flesh on the floor (because of its weight probably), if you manage to hit it and damage its core, the ball will explode and all of its limbs will explode everywhere, but will still keep bouncing around. (instead of the core it can also be the original non-extra grown limbs that get hit to explode.)