"Strictly speaking, the operational difficulty of resonance casting is higher than that of large-scale magic rituals requiring coordinated teamwork among multiple casters. This is exactly why the latter were preserved for military formations, while the former gradually faded into oblivion throughout history."
As soon as she finished speaking, Charlotte noticed the contemplative glint in Astrid's eyes and guessed the young girl was interested. She gently added,
"However, given the current circumstances, Lyra is a Peak tier Magnus on the verge of ascending to legendary status, and Astrid also has already reached the rank of peak tier Magnus. In terms of precision in mental energy, you both barely meet the minimum requirements for resonance casting..."
"As for the level of synchronization... that will entirely depend on how well you and Lyra can cooperate."
