"Spell Incantation essence?" Richard pondered for a moment before answering, "In my view, the essence of incantations should be a form of assistance to spells.
First of all, incantations are not necessary for casting. Combining an incantation with the energy within one's body is considered the standard casting procedure, but if a Wizard is sufficiently skilled, they can successfully cast a spell simply by controlling the energy in their body without reciting an incantation—that is, Silent Spell.
Correspondingly, if one's control over internal energy is not skilled enough, incantations can provide considerable help. According to some of my tests, when there is an error in internal energy control, if that error is less than five percent, using an incantation can greatly eliminate its effects.
Therefore, in a sense, incantations are like a crutch. They help novice Wizards reduce the difficulty of casting, increase casting safety, and prevent an accident caused by spell backlash over some minor detail."
"It seems you really have studied this." Abel nodded with some appreciation, then shifted his tone. "But have you ever tested another scenario—what would happen if, while using internal energy to cast one spell, you recited the incantation for an entirely different spell?"
This... Richard raised an eyebrow and began to think... Abel's suggestion was undeniably novel, giving him the urge to test it on the spot.
"Ha, it seems you haven't tested it. Then there's no need for you to try—I can tell you the answer directly. The result is a one hundred percent casting failure. No matter how accurately you control the energy in your body, as long as you recite an entirely wrong spell incantation, the spell is bound to fail." Abel said. "Starting from this point, do you have any thoughts?"
"Perhaps the essence of an incantation is both