Corrosion

Out of your outstretched hand spurts a shower of sickly, green acid.  Choose a square of 5 feet on each side within range.  Any creature in that space must make a dexterity saving throw or take 2d4 acid damage.  Any object in the area takes double damage from the acid. This spell’s damage increases by 2d4 when you reach 5th level (4d4), 11th level (6d4), and 17th level (8d4).