Take the Black Iron-level Brutal Aura, for example. The advancement of this skill signified that Fang Zhou had taken another major step forward as an Undead Mage.
[Brutal Aura] (Black Iron, Mastery): Passive Skill. Slightly increases the movement speed, attack frequency, and damage of subordinate Undead Creatures. Can consume Undead Mana to actively trigger a stronger buff, adding multiple energy attributes like Physical Armor-Piercing, Death Energy, and Corrosive Poison to subordinate Undead Creatures. The magnitude of the buff, its duration, and its area of effect are determined by the Caster's Spirit Attribute and Skill Proficiency.
Furthermore, the two Soul Series Skills that Fang Zhou had mastered also advanced accordingly.
Soul Enemy automatically advanced to a Black Iron-level skill, requiring little of Fang Zhou's attention.
The Soul Vision Skill, thanks to Fang Zhou's diligent efforts, also successfully advanced to the Black Iron-level [Soul Eagle Eye].
