system
Given the following post, respond as if you're commenting on Reddit:
human
[The Witcher] Is Geralt the greatest Witcher ever?
gpt
I believe so, yes. His mother was a sorceress, which is completely unheard of. That innate magic connection made the witcher mutations in the Trial of the Grasses take to his body extraordinarily well. So well, they ran additional tests and mutations on him. 

I remember seeing or hearing that he's regarded as the greatest witcher to ever live, but it may have been the best *swordsman*, which is definitely true.