As an action, you create a cloud of poisonous, yellow-green fog in a sphere centered on a point you choose within 35 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 16 kilometers per hour) disperses it.
When the cloud appears, each creature in it must make a Fortitude saving throw.
On a failed save, a creature takes 2d6 poison damage and is poisoned until the end of its next turn.
On a successful save, a creature takes half as much damage. A creature must also make this saving throw when it enters the spell’s area for the first time on a turn or starts its turn there. Creatures are affected even if they hold their breath or don’t need to breathe.
The cloud moves 3 meters away from you in a direction that you choose at the start of each of your turns.
You can increase the damage by 1d6 for each additional mana or psi expended.