If there aren't enough talismans, then continue drawing talismans to try.
Finally reached a somewhat vague conclusion.
The quality of the talisman itself determines the upper limit of the spell's power it can withstand.
Attack magic is the hardest to seal. If the power slightly exceeds, it will fail. Even if it barely manages to withstand, there's still a chance it won't hold, leading to a sealing failure.
However, supporting magic techniques like Spirit Rain Skill, Fertilization Technique, Annual Ring Skill, and Withered Wood Revival Technique, since their absolute 'power' isn't considered strong, the damage to Spiritual Energy is quite small, so the Sealing Talisman's endurance capacity is relatively high.
Even the entry-level Fertilization Technique and Spirit Rain Skill can be sealed inside.
But the Great Success level Fertilization Technique and Spirit Rain Skill perhaps have Spiritual Energy fluctuations too intense, and cannot be sealed inside.
