When Eryndor used his eldritch form, he was used to hearing whispers. They were something like -
Emotions are an obstacle to efficient decisions.
The pinnacle of efficiency is pure rationality.
Relationships are a burden which can be exploited.
A stagnant mind is a trapped mind. Keep changing your thought process.
There were many more types of whispers. They largely revolved around efficiency and getting stronger.
Over several times as he used this form, he had gotten rather used to it, both unknowingly being influenced and developing higher mental resistance.
The whispers would suddenly increase in intensity at times, or even get sparse, so when the intensity increased, he didn't pay it much attention.
However, perhaps because he was in his eldritch form which had a sharp perception, he immediately realized that the new whispers were different.
'Kill ten people.'
'Kill hundred people.'
