Lamia Spell Expertise

Your magic is your birthright, as much as any curse ever was. You gain the following benefits:
• Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.
• You can cast the major image, mirror image, and suggestion spells. Your spellcasting ability for these spells is the ability increased by this feat. Once you use this feat to cast one of the spells, you can’t cast that spell again until you finish a long rest. If you have spell slots of 2nd level or higher, you can use them to cast mirror image and suggestion, and if you have spell slots of 3rd level or higher, you can use them to cast major image.