Artificer: Flash of Genius

When you or a creature you can see within 30 feet of you fails an ability check or a saving throw, you can take a Reaction to add a bonus to the roll, potentially causing it to succeed. The bonus equals your Intelligence modifier (minimum of +1). You can take this Reaction a number of times equal to your Intelligence modifier (minimum of once). You regain all expended uses when you finish a Long Rest.