The option to choose 3 modifications out of many appeared in front of Danzel in the [Soul of Death Essence] passive skill.
From them all, Danzel chose [Soul Affinity], [Dead Mana Affinity], and [Power Increase]. He could have also chosen to make the discount for getting skills much bigger, but he decided against it.
Since this skill affected the performance of almost all his skills, he hoped to increase the 20%.
Though he still found it too risky to put his tempering point into that option. Ending up putting it at [Soul Affinity].
Turning the skill into [Unceasing Soul of Death Essence]