Spells: When you gain a new level as a Succubus, you gain 1 additional Succubus 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.
Heritage Power: The Succubus gains heritage Powers as usual, however you must meet all prerequisites to select them, using your new level as your class level to select the Heritage Powers. You cannot select a Heritage Power you already possess.
Profane Protection: This works as the listed ability. It possesses no additional effects.
Profane Grace: This works as the listed ability. It possesses no additional effects.
Lilith: This ability can be used an additional time per day.