system
Given the following post, respond as if you're commenting on Reddit:
human
[Witcher] Is Geralt a particularly powerful witcher or just average?
gpt
His mother is a Witch so he posses innate magical abilities. This means that he doesn't have to take Witcher Potions just to be able to use Signs.

A normal Witcher is an orphan without any magical abilities yet they still have to use at least the basic Witcher Signs to be effective monster hunters so a normally through mutations and a regiment of regularly ingested potions a Witcher without any natural talent in magic boosts his magical abilities high enough to use at least Signs - the crudest most basic form of magic.