Cleave

You channel your inner strength and unleash a powerful cleaving strike in a 40-feet Line originating from you. Each creature in the square must make a Dexterity saving throw. On a failed save, a target takes 4d6 slashing damage, or half as much damage on a successful save.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.