Floating spell slot

Because you have studied at the magic academy, your advanced knowledge and understanding has allowed you to gain an extera spell slot.When you gain this feat, every time you pick your spells for the day, you may roll a d8 to ditermin the level of spell slot you would gain, with each number corasponding to the level in which you would gain. If you were to roll a for a level of spell you do not yet have access to, you would forfit the extra spell slot for that day. At level 20, increase the d8 to a d10.