Lucien had no idea that the unfortunate Nolian's soul had already been "utilized" to the utmost degree. He was at the training grounds, watching Carly demonstrate her newly developed bow technique, the "Arrow of Deadly Poison".
This was a magic specifically chosen by Lucien to counteract fairies and half-fairies.
Compared to humans, due to their unique physique, fairies have higher resistance to elements such as flame, thunder, and ice, and their seemingly delicate and frail bodies are also more robust than those of humans.
But no race is perfect, and the fairies' weakness lies in their susceptibility to toxins—they even have lower resistance to poisons than average humans. Considering the potential encounters with many half-fairies and even true fairies in the future, Lucien decisively initiated Carly on this unorthodox form of magic.
One could say it was a targeted magic.