As two actions, you can create this bomb. As an action, a creature can throw this bomb at a point within 5 meters, where it explodes on impact. A cloud of poisonous, yellow-green fog spreads to fill a sphere for the duration. The sphere spreads around corners, and its area 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 area for the first time on a turn or starts its turn there must make a Fortitude saving throw.
On a failed save, a creature takes 3d4 poison damage and is poisoned until the end of its next turn.
On a successful save, a creature takes half as much damage.
Creatures are affected even if they hold their breath or don’t need to breathe.
You can increase the damage by 2d4 for each additional catalyst expended.
You can expend 1 additional mana or psi so duration changes to 1 hour/catalyst.