Vaneet's Negate Weather

When a creature that you can see casts a spell that commands the forces of nature or weather, you may as a reaction attempt to negate damage caused by that spell. You gain a bonus 15 feet to your movement (For the Somatic component to this spell you must attempt to place yourself in the path of the spell that would cause cause damage.) You may reduce up to 7d8 damage from 1 attack caused by nature, a hostile caster's spell, or a magical trap.

You could potentially negate a hostile creature's lightning bolt, or fireball spell with enough practice; and by using the energies created during this interaction... cast a quick spell back a target with it. - Vaneet Kahl to his apprentice on the effects of his spell

If you are able to reduce the damage that would be dealt to 0 you may take 1 extra Reaction on your turn to cast a spell that has a casting time of 1 Bonus Action. (This includes spells affected by the Sorcerer Metamagic feature 'Quickened Casting'.) 

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher you may reduce an additional 3d8 per additional spell slot above 6th. You may also reduce damage caused by an addotional source cast per additional spell slot above 6th.  If cast as a 9th level spell and you maintain concentration for the full duration, you may negate 1d6 effects from the spell Storm of Vengeance.