Defensive Cloud

You create an acidic burst with a foul smell which lingers in the area for 30 minutes. Each creature within range, other than you, must succeed on a Dexterity saving throw or take 1d6 acid damage.

The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).