With Charlotte's consent, Astrid continued attempting resonance casting. As an Arcanist mage, Charlotte's reservoir of mental energy was as deep as the ocean. The one who truly needed to consider whether her own stamina could last until the end was Astrid herself.
Furthermore, since Lyra's mental strength only reached the peak tier Magnus level, they would most likely use spells of that intensity to dispel the plague. Therefore, Astrid did not experiment with spells one tier higher. After several attempts, she finally succeeded in utilizing Charlotte's mental energy to release Middle tier Magnus-level wind magic.
As for the more complex peak tier Magnus level spells, no matter how hard Astrid tried, she couldn't release them properly. Their souls struggled to achieve synchronization, some wind element particles always slipped beyond control, escaping at the microscopic level.
