Black hole

You create a 100-foot-radius void of darkness centered on a point within sight. The void spreads around corners, and in cases the area. all the while pulling everything in it each thing must make strength save of 17 or be pulled to the void and take 4D20 of damage for the duration of the spell (at least 10 miles per hour) disperses it.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the radius of the fog increases by 20 feet for each slot level above 1st.