Briarweb

Thorny briar bushes and creeping vines sprout from the ground in a 20-foot square within range. For the duration, this area is difficult terrain. Any creature in the area when you cast the spell or who enters the area later must succeed on a Strength saving throw or be restrained by the briars. 

A creature restrained by the briars takes 1d8 piercing damage whenever it uses its action or reaction. A restrained creature can use its action to roll a Strength check against your spell save DC, freeing itself on a success.

When the spell ends, the conjured plants wither away.