Under normal circumstances, a person could only have one type of Natural Energy. However, there were incredibly rare exceptions to this rule where one was born with more than one type of Natural Energy.
Even then, it was typically only one additional type of Natural Energy. As for having three different Natural Energies, throughout the long history of the Apothecary Guild, the number of such individuals could be counted one's hands alone!
Though what made Celia stand out among those individuals was that, at most, only one of the other Natural Energies would be suitable for pill crafting. Yet, Celia not only obtained the Natural Energy of Fire. She also received the Natural Energy of Wind, along with the Natural Energy, which was a variation of the Natural Energy of Earth.
