The Book of Cagliostro was a book that recorded countless mystical secrets, as well as some powerful spells from the Darkhold.
Its author was not the famous eighteenth-century mage Cagliostro, but another mage named Seth Neg.
He had impersonated Cagliostro and written this magical book with autobiographical elements.
In particular, its extensive descriptions and records of the Dark Dimension allowed anyone to contact dimensional Demon Gods such as Dormammu through the book, or even establish a stable passage directly to the Dark Dimension and draw greater power from it.
After all, mages in the Marvel Universe were less practitioners who relied on mystical power to cast spells than energy converters.
They absorbed energy from various dimensions and universes into their bodies, then transformed it into all kinds of forms.
So-called "magic" was merely another manifestation of energy.
Therefore, whoever obtained the more powerful source of magic would hold an absolute advantage in conflicts between mages.
That was also why the Sorcerer Supreme, backed by the Trinity Vishanti, could stand above every mage in Kamar-Taj.
Because behind the Sorcerer Supreme stood the source of all White Magic in the entire multiverse.
By the same logic, if someone gained the support of Demon Gods from other dimensions, they could obtain an energy source of roughly equal caliber and gain the strength to confront the Sorcerer Supreme head-on.
After Kasilas stole the Book of Cagliostro, Earth's magical world entered a state of outward relaxation and inward tension.
Whether it was the Three Sanctums or Kamar-Taj, both increased their manpower and magical defenses.
But just as Ancient One had predicted, nothing happened in the days that followed.
Kasilas and those mages blinded by power all seemed to have vanished into thin air. They neither attacked the Three Sanctums nor launched attacks on mages scattered