Varateq's Fortress

You raise the earth up into a curved barricade in front of you. The half-dome remains stationary for the duration. Four creatures of Medium size or smaller can fit behind the barricade with you and count as being in total cover.
The dense stone wall has an AC of 19 and between 30 - 50 Hit Points depending on the type of earth available to construct the wall, at DM discretion (a Fortress made from sculpted sand should have less Hit Points than one composed of granite).