As an action, this 30-centimeters-long wooden tube begins to shake and emit a handful of white sparks, shedding light as a torch. It flies up to 35 meters where it explodes with a dazzling display of colors. Each creature in a sphere must make a Fortitude saving throw.
On a failed save, a creature takes 3d8 fire damage and is blinded and deafened until the end of its next turn.
On a successful save, a creature takes half as much damage.
You can increase the damage by 1d8 for each additional catalyst expended.