Having reached the rank of Third-Level Wizard, Green's next step was naturally to break through to Fourth-Level Wizard.
First-Level Wizard, Fourth-Level Wizard, Seventh-Level Wizard—these were the stages of qualitative transformation every powerful Wizard had to pass through.
Each transformation was more terrifying than the last. The power it brought lay utterly beyond the reach of the previous stage.
According to the records of Ancient Soul Academy, a Wizard's soul reached its current peak upon entering the Third Level.
If the soul did not undergo a fundamental change at that point, it would eventually succumb to decay.
Legend had it that breaking through from Third-Level Wizard to Fourth-Level Wizard was harder than all the previous advancements combined.
As a Wizard's Second Qualitative Transformation, a Fourth-Level Wizard, according to the Soul Academy's records, could unleash hundreds of thousands of degrees of power with a casual strike.
By comparison, a lone Third-Level Wizard, without some exceptional power beyond the ordinary limits, could never produce that kind of force.
When Third-Level Wizards in the Wizarding World wielded Fourth-Level power, they did so by borrowing the amplification of Formations, the support of Wizard Towers, or special War Sorcery.
But without outside support, a lone Third-Level Wizard could never wield Fourth-Level power.
Ordinarily, even with the finest magic tool, the best enhancing potion, the best Sorcery Model, and all their Mental Power poured into a single spell, a First-Level Wizard's maximum output remained below 100 degrees. Under normal circumstances, it fell between 30 and 50 degrees.
A Second-Level Wizard's maximum output remained below 1,000 degrees. Under normal circumstances, it fell between 300 and 500 degrees.
A Third-Level Wizard's maximum output remained below 10,000 degrees, and normally fell between 3,000 and 5,000 degrees.
Even in the Ancient Era, Fourth-Level Wizards could earn titles and rule over entire