Creeping Darkness

You create a Large, amorphous cloud of inky darkness. When you cast this spell and as a bonus action each round, you can move the cloud 20 feet. The cloud can enter a hostile creature’s space and stop there, and it can move through a space as narrow as 1 inch wide without squeezing. All creatures within the cloud may make a Wisdom saving throw or are blinded and deafened for as long as they remain in it.