Murderous Intent
Murderous intent was the invisible pressure formed by a cultivator who had taken many lives. Each death left behind a trace of hostility and wrath within the soul, which attached itself to the cultivator who had killed them. Over time, these traces merged with the cultivator's Soulforce, forming a terrifying aura capable of suppressing any being in a lower realm than themselves.
Cultivators often used murderous intent either to deal with lower realm beings without bothering to use their actual Soulforce, or amidst battle with opponents of a similar realm to disrupt their minds.
Murderous intent, although powerful, came with its own drawbacks. The wrath and hostility of the souls that the cultivators had taken would never leave them alone. They would hear constant, unsettling noises, suffer from anemia and nightmares, and in the worst cases lose all sense of reason, becoming senseless killing monsters.
