Bunker

Reaching into the earth you pull up a 6ft by 4ft wide wall with a 6in by 6in gap. It is formed out of whatever is the most prevalent natural resource is. The wall offers 3/4 cover, has an AC of 15 and an HP of 50. The wall has resistance to necrotic and radiant dmg, If the caster is targeted while behind cover and the attack misses but hits the walls ac the wall takes the relevant dmg. The wall stays standing until it is destroyed or dispelled.