When you cast this spell, choose a point you can see within range. Centered on this point, a wall of destructive force up to twenty feet high and thirty feet long springs into existence for the duration of the spell. As part of casting this spell, you may choose any number of creatures that can freely pass through this wall. When any creature that you choose comes into contact with this wall, they immediately take 4d8 thunder damage and their speed is reduced to 0 for the remainder of their turn. A creature can attempt to push through this wall with a successful Wisdom save against your spell save DC. On a success, the creature takes 8d8 thunder damage but is able to move through the wall. On a failed save, the creature takes 4d8 thunder damage and their speed is reduced to 0 for the remainder of their turn. Finally, you may choose the appearance of this wall, but it must be translucent yet visible.
When you cast this spell with a ninth level slot, all damage increases by 2d8 and the wall may be invisible.
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