Here is the piece from one of the books from the video game The Elder Scrolls IV: Oblivion:
However, a guild is different than a band. A guild implies an organization with membership rolls. It would have a financial structure, which would include member dues or some other means of securing funds. It would have rules of conduct or behavior.
What does "would" mean in this case? According to the official Russian translation, it appears to be something like "must".