Cactus Wall

You create a wall completely made of cactus up to 40 feet wide and 6 feet tall. All creatures near the wall when the wall is made need to make a DC 12 Intelligence check or will be pricked by the wall. If the creature succeeds, it will be pushed 5 feet away from the wall. Creatures who touch the wall are pricked and take 2d6 damage.

At level 9, the spell's pricking damage increases to 3d6, at level 12, the spell's pricking damage goes up to 4d6, at level 15, it becomes 5d6 damage, and at level 18, it becomes 6d6.

At Level 3 the wall has 36 HP. At level 5, the wall has 42 HP. At level 11, the wall has 48 HP. At level 16, the wall ha 60 HP. At level 19, the wall has 72 HP.