I think I figured out a way to get a Zenmaster and Assassin at a considerably weaker state. Just take a level 1 character with a lot of strong characters to the Dojo or Pawnshop (whichever role you're getting) and have them accept the role. I think you could figure out something for Valkyrie but that would be kinda hard, getting a low level character around in Cet's pyramid
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-Jafin