As two actions, you can create this vial of slowly swirling neon blue gas. As an action, a creature can throw the vial at a point within 5 meters, shattering it on impact. Each creature in a sphere centered on that point must make a Fortitude saving throw against poison.
A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
You can increase the damage by 1d10 for each additional catalyst expended.
You can increase the slowed level by 1 for each additional catalyst expended.