Acid Pit

Target a spot on the ground which you can see. You create a sinkhole, 20ft wide in a circle and 10ft deep, at the bottom of which is a pool of acid. Any creature takes 4d4 bludgeoning damage and 2d8 acid damage when it falls into the pit. It takes 2d8 acid damage each round until it escapes the pit or the spell ends. The spell lasts for 10 rounds when the spell ends any creatures and objects, that are still in the pit, are safely ejected to an unoccupied space nearest to the surface on which you cast the spell. A creature must succeed a DC 16 DEX check to escape the pit.