You learn one 6th-level spell of your choice from any spell list, and gain one 6th-level spell slot. Your spellcasting ability is the same as the one you chose when you took the 1st-Level Spellcasting feat. You can select this feat one more time. If you do so, you learn one more 6th-level spell of your choice from any spell list and gain one more 6th-level spell slot.