Arcane Precision

You cause an attack to ignore the laws of inertia. You may use this reaction before or after you or an ally that you can see with 60 ft. of you makes an attack to give them a +5 bonus to the attack roll. You may only use this reaction before it is declared to be a hit or a miss. Regardless, if the ally misses after the spell was cast, you don't lose the spell slot used to cast this spell.