The moment he killed the phantom, a rush of knowledge invaded his mind, giving him all the ideas to improve the pseudo rune and its flaws, then knowledge on how best to use it in combat, etc.
Then he found himself back in the runic chamber, and then saw it changing all over as a transformation took place. The runic chamber in his soul sanctum was already quite large, now it expanded slightly. The various patterns on the chamber changed slightly; each section of the chamber seemed to become slightly more advanced, but it wasn't too significant from what he could tell.
The biggest change occurred in his Nexus Core. As the gas-like mana started to compress and a rush of mana seeped into Axel's body from the outside world, it started to coalesce into his nexus core. A profound change occurred within Axel; he could feel it. His mana reserves and all of his strength increased; The change wasn't too extreme, but it was exhilarating to say the least.
