Deep Magic Volume 1
Distraction Cascade
2-level Divination
Casting Time: 1 reaction, which you take when an ally declares an attack against an enemy you can see
Range/Area: 30ft.
Components: Verbal, Somatic
Duration: Instant
Damage/Effect: Buff
With a flash of foresight, you throw a foe off balance. Choose one creature you can see that your ally has just declared as the target of an attack. Unless that creature makes a successful Charisma saving throw, attacks against it are made with advantage until the end of this turn.
Available for: Bard, Cleric, Druid, Ranger, Sorcerer, Warlock, Wizard