4th Level Arcane, Primordial and Wyrd Evocation
Casting Time: 1 action
Range: 24 sqr. (36m)
Components: V, S, M (a small piece of phosphorus)
Duration: 1 minute
You create a wall of fire on a solid surface within range. You can make the wall up to 12 sqr. (18m) long, 4 sqr. (6m) high, and 0 sqr. (0m) thick, or a ringed wall up to 4 sqr. (6m) in diameter, 4 sqr. (6m) high, and 0 sqr. (0m) thick. The wall is opaque and lasts for the duration.
When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 5d8 fire damage, or half as much damage on a successful save.
One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 2 sqr. (3m) of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.