Caustic Wave

Choose a point within range; a wall of caustic liquid up to 300 feet long, 300 feet high, and 50 feet thick rises from it and lasts for the duration of the spell.

When it appears, each creature in the wall’s area must make a Constitution saving throw. On a failure, it takes 6d8 antimonic damage and gains the Weakened and Intoxicated conditions, or takes only half the damage on a success.

The wall moves 50 feet away from you each turn after it appears, carrying along any creature within its area. Huge or smaller creatures within the space the wall moves through must make a Strength saving throw or take 5d6 antimonic damage. Creatures can take this damage only once per round. At the end of the turn, the wall’s height is reduced by 50 feet, and the damage creatures take from this spell in subsequent rounds is reduced by 1d6. When the wall reaches a height of 0 feet, the spell ends.

Creatures caught by the wall can try to swim, but due to the wave’s force, they must make an Athletics check against the spell’s DC to move. On a failure, they can’t move. Creatures that move out of the spell’s area fall to the ground.