"Brother, shall I guide thee outside of this tomb? There is nothing to be found in these ruins, Ben if they were once the most holiest Of places." Legion suggested.
"No... no... I must bring order to the tomb. I am sent here to bring Judge the living, I need my court! If only Lord Ainz was here...something as simple as 5is would be child's play for Him."
Gavel walked slowly to the Center of the room, lighting a small flame with his bare hands. He could see the hundreds of desecrated and broken coffins, feeling sympathy for the relics, and anger towards the living. For this was where he was birthed, this very tomb. Seeing his home destroyed and looted was enough to break him if he were a human.
"Gather the corpses of the human trash. Scrape their flesh off of their bones and deposit the bones into a coffin each. Brother Legion, you are about to see the legacy of Nazarick. A Millenia ago, I came to being in the same manner. A corpse in a coffin, walking anew." Gavel recalled as he ordered Legion.
"As you command!" Legion did just as Gavel had ordered, placing a skeleton in a coffin after processing each corpse. Eventually, Gavel gathered some of the old skeletal remains in the room and placed them in coffins too. This is all for the sake of rebuilding what he had lost. Even if this meant allowing filth into the ranks of the brotherhood, they would still be purified in bones.
Gavel stood at the Center of the room with his own gavel in hand. It had been a long time since this Gavel had apparently been used, and now it will summon an army.
BANG
Immediately, each coffin raised forth a skeleton warrior of 30th level, all with golden combat gear. None of them looked amazing, but together, they were a small army. They all stood up from their coffins and faced the one that had awakened them.
"Brothers, you have taken your first step onto this wretched world. You may not understand this, but you all carry a profound and powerful legacy. Your first every words spoken to you, are ones of passion and order. Let it be known, I, Gavel, have awakened you younger brothers to serve in the army of Nazarick. Nazarick has fallen, but with you, it will rise again. The legend of Ainz Ooal Gown shall once again come to light! Take up your swords, there are 'living' that have yet to join our brotherhood! Do not rest until the Brotherhood is eternal."
Gathering corpses is something that anyone can do. Creating them takes skill, creating things with them takes power. with an army of master guarded class skeletons, Gavel only needed more. Cleaning the tomb can be done soon, but first, the army of newly awakened undead must expand swiftly through the night.
SLASH
The night was howling as the voices of humans could be heard across the many surrounding villages. As was predicted, humanity managed to slightly regress yet again. A single one of the newly awakened skeletons could raze an entire village, all of them put together could fight against a regiment easily.
With the sound of the desperate winds easing, the night went quiet. Soon the tomb would become loud with the sound of skeletons yelling 'brother!' And the constant renovation of the reserve Tomb. Gavel had already managed to gather 1000 brothers after a week of night raids, culminating in the formation of a small army.
When seeing the scene before him, Gavel remembered when he had created the Necropolis. Such a long time had passed, and his legacy might not have stood the test of time. The brothers he awakened, all dead. All he can do is to guide these new brothers and move forward.