Cleave

An invisible blade of cutting force shoots forth from you. Each creature in a 15-foot Cone makes a Dexterity saving throw, taking 3d6 Slashing damage on a failed save or half as much damage on a successful one.

Creatures that have blood in the Cone start [Tooltip Not Found] until they are magically healed or take an action to stem the bleeding.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.