If you are an Arcanist, each time you gain a level of this ability you learn +2 new spells from the Arcane Spell List.
If you are a Cleric, each time you gain a level of this ability you learn +2 new spells from your deity’s spell list (Alethian Spell List, Bakharan Spell List, Druathan Spell List, Oruunari Spell List, or Vallarian Spell List).