The Crossblooded sorcerer archetype has a separate spellbook from the base class; this adds the spellbook to the mythic paths currently merged. I've checked that, on gaining Mythic Rank 3, Azata and Demon both seem to allow selection, have not tested progression further than that though.
The Crossblooded sorcerer archetype has a separate spellbook from the base class; this adds the spellbook to the mythic paths currently merged. I've checked that, on gaining Mythic Rank 3, Azata and Demon both seem to allow selection, have not tested progression further than that though.