A-10 Ground Strike.

You create a wall of 30mm hell on any surface within range. You can make the wall up to 60 feet long, 10 foot and 15 foot thick. The wall is semi-opaque and lasts for 5 turns.

When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 3d10 fire damage and 2d10 thunder 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 10 feet of that side or inside the wall. A creature takes 1d10 less damage per turn 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.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each damage type for each slot level above 6th.