Trick:
Reset Adventures clears your role history. Right, you cannot become a ninja twice during a particular game run
but when you reset adventures, you can become a ninja again.
Usage:
1. You can collect all magic schools, become a warlock in the end, and reset andventures. Now, you are a "pure warlock", without any role history. But you also know all magic schools. Therefore, you can collect important spells and change role to anything except warlock and base roles no matter which roles you have got before reset adventures.
2. You can collect role specific traits and reset adventures. The traits will not vanish - unlike your role history
Therefore, you can change role to your favourite role even if you have already got the role before reset adventures.