Water Magic

Mud Sink

1-level Evocation

Water sinks into soft earth turning it into mud, turning a 15-foot square centered on a point within range into difficult terrain for the duration.   When the mud appears, each creature standing in its area must succeed on a Dexterity saving throw or fall prone. A creature that enters the area or ends its turn there must also succeed on a Dexterity saving throw or fall prone.
At higher levels: For each level cast above 1st, increase the size of the square by 10 ft.