Hi! Thanks for your question! They don't affect anything in Exploration Cycle, but I have a role-playing game, Treasured Possessions that the systems come from. In Treasured Possessions, the characters are spirits protecting a village and the interact with the world by inhabiting the villagers. To be compatible, the spirit needs to match the suit of their trait, Will, with either of the villager's traits, Strength or Skill.
Because you can use both games together, I left the suits in here so they're 100% transferable.
I'm hoping to publish a play test version of Treasured Possessions soon, maybe once I've got an example adventure to go with it.
Hope that helps!