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 swirling cloud of smoke shot through with white-hot embers 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 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 3d6 fire damage and is burning 1.

On a critical failure, it takes twice as much damage and is burning 2.

On a success, it takes half as much damage and is burning half as much.

On a critical success, it takes no damage.

Augment

• You can increase the damage by 1d6 for each additional catalyst expended and the burning level by 1 for every two additional catalysts expended.

• You can expend 1 additional catalyst so duration changes to 1 hour/catalyst.