One crafty mage, who saw how the spell summon lesser spores was a reworking of an early magical failure, did some research of his own. He saw that the accident which the lesser spores spell was fairly minor, and that the resulting spell was also a fairly minor spell. He remembered learning about another earlier tale, where several practicers of magic were trying to jointly conjure a great amount of power. The result was a tremendous explosion, which killed all who were involved. By researching this event, he was able to recreate the scope of the energy conjured, and tailor it into a stable form. The result, is a spell, while similar to the lesser spores, that is much more powerful.