Barbelette Argenté

When another creature you can see within range, (60ft.) succeed on an attack roll, an ability check or a saving throw,  You magically distract the triggering creature and turn its momentary uncertainty into encouragement for another creature. The triggering creature  must reroll the d20  and use the lower roll.

You can then, choose a different creature you can see within range (this can include yourself) the chosen creature has advantage on the next attack roll, ability check, or saving throw in makes within 1 minute.  A creature can be empowered by only one use of this spell at a time. 

This first level spell is available to Bard, Sorcerer, and Wizards, or anyone taking the "magic initiated" feat.