When the massive, tower-like weather controller was finally erected, even Perfikot's powerful spiritual power had been exhausted several times. It was solely by forcibly replenishing her spiritual power with spirit potions that she managed the feat of completing the weather controller in one go.
Perfikot was drained of her spiritual power multiple times, so one can imagine the condition of the other Alchemists who acted as amplifiers and ritual components.
Although Perfikot had prepared spirit potions for them, by the time she finally completed the construction of the weather controller, nearly forty Alchemists assisting her were almost completely drained, with over a third having fallen into unconsciousness.
Repeatedly being drained of spiritual power places a tremendous burden on the body. Although spiritual power can be replenished by potions, fatigue and pain cannot be eradicated.
