Inflictors are elves with the ability to inflict pain and emotions on someone else. This ability has the capability to incapacitate others and is very rare. Because this ability can be dangerous, the Council monitors Inflictors carefully. Sophie describes seeing colors in her peripheral vision before she used this ability.
Sophie discovers this ability in the first book when she is with Dex in Paris. In a different book, she learns that she can inflict positive emotions as well as negative emotions because of her alicorn inspired DNA.
Councillor Bronte was the only Inflictor before Sophie manifested. He now acts as her Mentor and can only inflict negative emotions.