Research on Forbidden Spells had always been one of the topics of interest at the Academy of Magic.
Magic had already entered into a new era after runic meditation had been universalized. Naturally, they began thinking about picking up on the things they had thrown away. However, the many and complicated details of Forbidden Spells had still created an extremely great deal of trouble for them. Due to the subtle control over the elements, it would be very difficult to finish casting the spell by relying on the powers of a single individual. On the other hand, having many people cast Union magic was a secret of the Church that would not be divulged. All this time, they had not been able to figure it out through research.
Because of that, although they had come up a way to cast magic by omitting incantations and directly utilizing runes, the actual difficulty still surpassed human limitations slightly.