Binding Bees

You choose an area within range, for the duration of the spell that area becomes a patch of dirt home to a swarm of magical, aggressive, flightless, stingless burrowing bees.

A creature in the area when you cast the spell must succeed on a Strength saving throw or be restrained by the angry bees until the spell ends. Additionally, the first time a creature enters the area on its turn or starts its turn there it must succeed on a strength saving throw or be restrained by bees for the duration of the spell. A creature restrained by the bees can use its action to make a Strength check against your spell save DC. On a success, it frees itself.

When the spell ends it returns to the terrain it was previously.