With their new ruler cementing his grip on power and their stronghold moved further into the Deepmere the gitmob tribes of the Ghoulmere resumed their hunts and raids on the caravans of Greywater. For all the safety their deeper refuge granted the hunting parties found meat increasingly scarce this far from hospitable ground, whilst an intrinsic part of their ancestry Nazzigs council were forced to look beyond the hunt to sustain their recuperating forces. Those grots with a greener thumb began to cultivate swamp weeds and herd the mere-bugs that thrived far from interfering exterminators, though bug meat lacked the rip and tear of freshly caught prey its sustenance could provide what hunting parties more frequently failed to. Whilst unified the Gitmob tribes were far from a major power in the region, they had been decimated in the fall of Skumfenn Sump and Nazzig grew increasingly paranoid it was only a matter of time before the necrotic legions would make a second attempt on him, clawing at the mark their curse had left upon his flesh whilst barking orders. 

It was not merely the Legions of Nagash that sought to exploit the power of the mere however, to the north lay the Realms-edge Mountains that formed the natural refuge of grot tribes rumoured to serve more malign masters than many of their ilk. These Undermina Grots had an expansive warren of mines beneath the mountains carving out Realm stone and ores to use in their bizarre experiments. Here they had what Nazzig lacked, the raw materials and experience to arm a legion of Grots in the defence of the Ghoulmere, and he the position and cunning to exploit the trade routes of Greywater to slip their spies past the cities walls. 

The Underminas were led not by Grot but an ancient Troggoth tainted by the runoff from the industry of Greywater, his regeneration accelerated beyond his own kinds natural limitations. In times long since passed this Troggoth had seized an accursed axe amongst his treasure horde and this demonically infused weapon drew the dark appetites of the Underminas to him. Nazzig found this potent and yet somewhat dimwitted leader amusing and exploitable, a grot would always seek to usurp him for power yet the Troggoth had become reluctant leader to a rabble he could not escape. Moreover as the Underminas were recovering themselves from a bitter war against the rat-kin in the under-warrens of the Realms-edge Mountains the two tribes of grot found themselves in an accord.

This was perhaps the first time the Ghoulmere found a growing faction beyond a single culture of Grots, no longer mere Gitmob as Nazzig had pushed his followers beyond their ancestral traditions evolving into something new, and with the influx of the malign Underminas they combined factions took their name from the region that now provided refuge, Ghoulmere Grots.

As raw materials flooded into the Deepmere from both raids on Greywater caravans and the mines of the Underminas the forces of the Ghoulmere grew both in size and potency. Lumbering artillery beasts were loaded with blackpowder weapons and stolen Skaven war machines to bring destructive power to bear, the Beast masters of the Gitmob had wrangled much of their menagerie back to their cages and fighting pits from the destruction of Skumfenn Sump. Creatures of the Deepmere themselves seemingly sought out the Kruel King, fell bats drawn to the necrotic energies of the mere made homes in the trees over the grot encampments and their mereshrieker cousins became the mounts of Nazzig royal guard.

The first conflicts of the newly evolved Ghoulmere Grots were against those of their own kind who resisted the power of the Voidskulka, primitive Bog Grots who refused to give up land and tribute to a monarch they neither wanted or needed were hunted down. The poisoned blades of Underminas assassins found the backs of Shamans who had overseen the mere for centuries taking with them the secrets of seemingly endless life for grots, success only stoked hunger for power that drove the Ghoulmere Grots ever onwards against their foe as they battled through the mere culminating in a mighty battle ultimately ended by the intervention of the Sylvaneth guardians of the mere forcing a unity that the Bog Grots had resisted. 

In the aftermath of this clash Nazzig claimed the arm of the tree lord guardian of the Ghoulmere “The Pale Oak”, his craftsmen fashioning the branch into a new staff of power for their monarch to stand testament to his success over the treefolk. Wielding this staff and with a growing force now flooding the Deepmere Nazzigs unification of his kingdom had peaked, no grots who stood against him dare raise their head from the bog waters as the Ghoulmere Grots became enforcers of his will and extension of his power.