MAX Stack x 25
A glass orb that shimmers with fire
'His hand dipped into his robe and came out with something shining-a glistening sphere. This he threw suddenly at Conan. The Cimmerian contemptuously struck it aside with his sword-at the instant of contact there was a sharp explosion, a flare of white, blinding flame, and Conan pitched senseless to the ground.' - The Hour of the Dragon
While there are always rumors of sorcerers who summon fire from the skies and cause the earth to revolt against their foes, this orb is simply a concoction created from mixing fluids together.
To the credulous and superstitious, it appears to be sorcery. But to the educated it is simply an alchemical curiosity, able to set a burning fire on whatever surface it impacts.
It can also be used in combination with grease to create a larger fire effect.