章 882: The terrifying spell that destroyed the Empire _3

'When I return to the main timeline, I must let the fire mage family learn it.'

Garen thought to himself.

Because he had already memorized the contents of the resonance casting, he put the book back in place.

In the Eladia Empire, the resonance casting was not considered a precious secret technique because it was powerful because it required a large number of spellcasters to know how to use it. It was just a way of casting.

More than half of alpha spellcasters could use resonance casting, with wind spells as the main spell.

At this time, the fire mages were more irascible and easily conflicted with each other. They didn't like to work in groups and scoffed at resonance casting.

if I'm not mistaken, the Prime Material Plane, the main planet, the satellite world, the many ownerless planets, and the entire Galaxy where alpha lived were all destroyed by the resonance casting.