According to Heather, she had accumulated knowledge about Rune Formation from a young age, but it had always been neglected.
It wasn't until Ronan gave her a "lecture" that she seemed to have an epiphany, and the knowledge buried in her memory gradually "awoke." It was only then she realized she had quite a remarkable talent in Rune Formation.
Magic Array involves a more advanced application of runes, akin to assembling various components into a complete machine. It requires not only extensive knowledge of Rune Studies and Magic Array but also a high degree of talent.
Ronan had a long conversation with Heather on the topic of formations and only then realized that Rune Formations were even more complex than he had imagined.
A Level 5 Wizard who comprehends the True Spirit can then construct their own Inheritance Array.
To a Level 5 Wizard, the Inheritance Array is akin to the Soul Seal for a Level 2 or 3 Mist Wizard, significantly enhancing one's combat power.
