Target an area within range you can see. You invoke Zyraakar's foul Acid Breath in a 20-foot-radius, 20-foot-high column centered on a point. When a creature enters the spell’s area for the first time on a turn or starts its turn there, it must make a Constitution saving throw. On a failed save, a creature takes 4d8 acid damage and their AC is permanently reduced to 10. On a successful save, a creature takes half of that damage.

 On each of your turns after you cast this spell, you can use an action to move the column up to 90 feet in any direction.