Magic Foundation, Welcome Corrections

Magecraft base disk = existing API = wheel

Using Magecraft = writing a program to call an API = reinventing the wheel

Magic Crest = Pre-written Program

For example, the most widely accepted Magecraft theory within the Magecraft foundation is the Church's "Teachings of God." Magecraft foundations inscribed in the form of scholarship and religion become deeply integrated into the earth's veins, allowing the Magecraft using that Magecraft to utilize it anywhere on Earth. However, if one leaves the land inscribed with their Magecraft foundation, the land's support weakens, and the power diminishes significantly.

The foundation of Magecraft is not a discipline or religion, but rather a personal oral tradition or a limited inheritance within a clan.

As long as it conforms to the rules of the base system, it can exert its basic effects anywhere on Earth.

Matou Zouken's Makiri clan moved from their hometown to Fuyuki and declined. For Magecraft to move land means leaving their Magecraft base, which is a huge risk.

The pathway for utilizing the Mana is

World → Foundation → Circuit → Sorcerer

Incompatibility of the base plate will lead to the Mana Source being cut off.

Furthermore, Amakusa Shiro's Noble Phantasm, the Heavenly Wisdom Foundation, is a foundation possessing absolute suitability.

The Crest contains a solidified spell that can be activated simply by infusing Mana.

In short, casting Magecraft where the fundamentals are incompatible depends on whether the caster's limited Mana supply can meet the spell's requirements.

If it's a low-cost spell, it can naturally be activated.

A powerful spell can also be cast if the caster obtains a large amount of Mana through special methods.

It has little to do with the concept of Crest.