Up to 10 minutes
You create a wall of brush bristling with needle-sharp thorns. The wall appears within range on a solid surface and lasts for the duration. You choose to make the wall up to 60' long, 10' high, and 5' thick or a 20' diameter circle that is up to 20' high and 5' thick. The wall blocks line of sight.
When the wall appears, each creature within its area must make a Dex saving throw. If failed, it takes 7d8 piercing dmg, or 1/2 dmg if successful. If a creature attempts to move through the wall, it must spend 4' of movement for every foot. Furthermore, the 1st time a creature enters the wall, or ends its turn there, it must make a Dex saving throw. If failed, it takes 7d8 slashing damage (1/2 dmg if successful).
When casting using a spell slot of 7th level or higher, both types of damage increase by 1d8 for each slot level above 6th.
a handful of thorns
Murus di Spinas