inspired by the sorcerer favored soul build of 5E
When you create your sorcerer instead of getting Access to Wizardry, you may instead gain Divine Soul
Starting at 3rd level, you can take a cleric spell in place of a sorcerer spell that is 2 levels higher than it. For example, you can take a 1st level cleric spell in place of a 3rd level sorcerer spell. this also lets you replace one of the energy types of the Random Energy ability with the holy type.
additionally the Arcane Heritage (Archmage) talent is reflavored as Divine Heritage (Priestess) changing references about wizards and magic to clerics and the divine as appropriate.