Spells: Beginning at 1st level, When you gain a new level as an Oracle, you gain 1 additional Oracle spell you can cast per day. In addition, when you gain another spell level, you gain another spell per day for that spell level and every spell level before it to a maximum of 3 additional spells per day for most spell slots.
Mysteries: The Oracle must select a new Mystery.
Curse: The Oracle must select a new Curse.