Overlord: Nemesis is a counter force

 An odd power blossomed within you after the matter with the two Endkin and the Chimera. Within your center, not of your heart but somewhere… deeper, a sort of liquid essence formed that began to pool within your ‘self.’ Remembering the teachings of Mystics, you settled down to examine the strange energies now within your body. You prodded it, poked at it, and after you ascertained it was of yourself, you pulled it into the world as you would energy for one of the few spells you know.

The results were terrifying and awe-inspiring.

For a brief moment you felt all the energy around you, everything from the smallest of organisms within the dirt as well as the power softly pushing along the winds, and the next, everything simply went still… and died.

Instinctively, as you recoiled from what you did, you realized that you hadn’t caused things to End.

No, the power within you had perfectly, efficiently, and instantly countered everything you’d sensed and rendered it all inert. The wind met a force exactly needed to make it still, every organism was killed with just the amount of energy it needed, and even the temperature was rendered neither hot nor cold.

Still, Everything had not become Nothing, as you had initially feared. The air about you eventually shifted due to the surroundings, the cold returned, and you located the dead body of a single beetle. That knowledge was enough to warrant you to study, broach the topic to your companions, and eventually train your newfound power… rather than hide it away in fear of being the End.