The rune that Ronan fed to Ahaxia came from the Ancient Yinduo Spirit at the Silent Corridor, a Level 5 being.
The Ancient Yinduo Spirit Crystal Core obtained from the Silent Corridor had long been absorbed by Ronan as a Demon Crystal. The remaining pieces transmitted were rune fragments from Ancient Yinduo, the most complete comparatively.
Feeding the Ancient Yinduo rune to Ahaxia was merely a small experiment Ronan conducted with his undead magic.
To truly enhance the built-in sonic effect of the "Ghost Arrow," Ronan had another method prepared.
Ronan instructed Ahaxia to kneel before him, then extended his right hand, allowing the tip of his index finger to lightly touch Ahaxia's forehead, slowly beginning to etch.
It seemed like a rune engraving process.
Ronan's finger, like a red-hot soldering iron, etched imprint after imprint of runes on Ahaxia's forehead.
