As two actions, you create a wall of acid on a solid surface within 20 meters for the duration. The wall blocks line of sight, but creatures and objects can pass through it.
When a creature enters the wall’s area for the first time on a turn or starts its turn there, the creature must make a Reflex saving throw.
On a failed save, a creature takes 2d8 acid damage immediately and additional acid damage equal to half the amount of acid damage dealt at the end of its next turn.
On a successful save, a creature takes half the initial damage and no damage at the end of its next turn.
You can increase the damage by 1d8 for each additional mana or psi expended.