I have a question regarding Arcane Tattoos: it offers innate spells to any character who chooses it, but some of these spells needs to know the main incantation caracteristic of the character. Which one should be used then?
For example, if I choose Arcane Tattoos for a Barbarian, I really don't know if I should use Intelligence, Wisdom or Charisma for his innate spells. I guess Charisma would make more sense as it's historically what was used for innate magic but I'm not fully convinced.