Wall of Beavers

You conjure a swarm of beavers to surround you on all sides. The beavers form a wall 6 feet tall and 5 feet thick that fills the spaces surrounding you. The wall of beavers is opaque and you are considered blinded if you are shorter than the wall of beavers. The wall blocks line of sight.

When the wall appears, each creature within its area must make a Constitution saving throw. On a failed save, a creature takes 2d8 piercing or bludgeoning damage (caster's choice), or half as much damage on a successful save.

A creature can move through the wall, albeit painfully and slowly. For every 1 foot of movement a creature move through the wall, it must spend 4 feet of movement. Furthermore,  the first time a creature enters the wall on a turn or ends its turn there, the creature must make a Constitution saving throw. It takes 2d8 piercing or bludgeoning (caster's choice) damage on a failed save, or half as much damage on a successful one.

 At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, damage increases by 1d8 for each slot level above 2nd.