Yamato

Type: Evocation Cast Time: 1 action Range: Self (15-foot radius) Components: V, S Duration: Instantaneous Description: The Oniro spins with fierce intensity, becoming a whirling force of steel and fury. Each creature within a 15-foot radius must make a Dexterity saving throw. On a failed save, creatures take 4d12 + Strength modifier slashing damage, or half as much on a successful save. The user has advantage on attacks of opportunity until the start of their next turn.