3-level Evocation
You hold up your open hand and a spray of energy shoots forth from your palm. You choose acid, cold, fire, lightning, poison, or thunder for the type of spray you create. Each creature in a 30 foot cone must make a Dexterity saving throw. A creature takes 6d6 damage of the type you chose on a failed save, or half as much damage on a successful one.
When you cast this spell using a spell slot of 4th or higher, the damage increases by 1d6 for each slot level above 3rd.