As two actions, you create a cloud of acidic, green fog in a sphere centered on a point within 20 meters. The cloud spreads around corners and is heavily obscured. It lasts for the duration or until a wind of moderate or greater speed (at least 15 kilometers per hour) disperses it. A creature that enters the spell’s area for the first time on a turn or starts its turn there must make a Fortitude saving throw.
On a failure, it takes 2d6 acid damage immediately and additional acid damage equal to half the amount of acid damage dealt at the end of its next turn and its armor or natural armoris corroded 1 until the end of your next turn.
On a critical failure, it takes twice as much damage and its armor or natural armoris corroded 2 until the end of your next turn.
On a success, it takes half as much damage.
On a critical success, it takes no damage.
Creatures are affected even if they hold their breath or don’t need to breathe.
The acid slowly eat through objects, creating holes in surfaces, destroying nonmagical items, or dissolving bodies. It takes 1 minute to dissolve nonmagical organic materials such as cloth, plants, or rope, 10 minutes to dissolve wood, and 30 minutes to dissolve bodies and metal.
As an action, you can cause the fog to move 2 meters in a direction that you choose at the start of each of your turns. As an action, you can stop the fog from moving if it is within 20 meters of you.
You can increase the damage by 1d6 for every two additional mana expended.
You can expend 1 additional mana so duration changes to 1 hour/mana.