"The powerful immortal sects with countless disciples dominating the countless kingdoms of the mortal world with an iron fist, killing demons and gods alike, and justifying their bloodlust, amoral brutality and total lack of mercy over the weak with their strength being justice are the masters of the universe. Forever an impassable mountain, a bottomless pit. Until one day... cultivation ceases to exist." I am looking for a novel where cultivation for whatever reason ceases to function/exist and the previously oppressed "commoners" seek their well-deserved divine retribution/revenge on the now powerless "noble" cultivators.
Mystical Journey has an arc like that Tales of the Reincarnated Lord is a world after that Black iron's glory is in the process of usurpation Radiant is the same