Dragon's Breath (Non-OP version)

You touch any one willing creature in range and as they eat the hot pepper, you imbue said creature with the power to spew magical energy from its mouth, if it has one. Choose from acid, cold, fire, lightning, poison, or water (bludgeoning damage). Until the spell ends, the creature can use an action to exhale energy of the chosen type in a 30-foot cone or 5ft-by-30ft Line, depending on the damage type. Each creature in that area must make a Dexterity or Constitution saving throw depending on the damage type, taking 4d12 damage of the chosen type on a failed save, or half as much damage on a successful one.  

acid - 5ft by 30ft Line (DEX SAVE)

cold - 30 ft Cone  (CON SAVE)

fire - 30 ft Cone  (DEX SAVE)

lightning - 5ft by 30ft Line (DEX SAVE)

poison - 30 ft Cone (CON SAVE)

water - 5ft by 30ft Line (DEX SAVE)

At higher level:  

When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d12 for each slot level above 5th level.