Drizzmodius' Exponential Flight

You gain a flying speed of 60 feet for the duration. If you are still aloft when the spell ends, you careen into the ground, taking 1d6 bludgeoning damage in addition to normal fall damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, your flying speed (as well as the damage you take from crashing) is doubled for each slot level above 3rd.