2nd-level conjuration
Casting Time: 1 reaction, taken when you are hit by an attack
Range: Self
Components: V, S
Duration: 1 minute

You stomp the ground, causing a shield of stone to erupt from it. To cast this spell, you must be standing upon stone or earth.

The stone wall erupts between you and your attacker,granting you three-quarters cover (+5 bonus to AC and Dexterity saving throws) against the triggering attack. If this increase to your AC would have made the triggering attack miss, it does.

The wall remains until the spell ends, after which it crumbles to dust. It is 5 feet wide, 5 feet high and 1 foot deep. The wall has an AC of 15 and 30 hit points. Reducing the wall to 0 hit points destroys it.