Tymora's Gambit

The 7 twenty-sided dice used as the material component for this spell begin glowing with golden energy, and orbit around you at various different angles and speeds for the duration of the spell.

You roll 7 d20s, and record the results. Once on each of your turns, or as a reaction when a creature you can see rolls an attack roll, ability check, or saving throw, you can replace the result with one of your previously rolled results. The result of the roll becomes the result you chose, as if the die had naturally rolled that number. A die replaced in this way cannot be re-rolled. You can choose to make this replacement after determining if the initial roll succeeded or failed.

Whenever you make an attack roll, ability check, or saving throw, you can choose to take disadvantage on that roll. If you do, you can choose one of the results and add it to your dice pool.

You can use more than 1 result at a time when using this effect, as long as all of the results have the same value. The exception is the number 7, which is "wild" and can be paired with any other number. When spending 2 or more dice at once, roll a d6 on the following table. Add +1 to the result for each die additional result used, beyond 2. For example, if your current pool of numbers is 1, 5, 7, 10, 12, 12, and 19, you could spend the 7 and two 12s to replace any roll with a 12, and roll a d6 on the table. Because you are using 3 results, you add +1 to the result of your roll.