Jar of alchemical powder

Jar of Alchemical Powder is a Oddity in Torment: Tides of Numenera.

Description
This small clay jar contains a sparkling powder, an alchemical substance of unknown origin. It was given to you by a merchant who noted that it is worthless, except to his "trading partner" in the Ascension... which is apparently a floating megalith.

Location

 * given by merchants in Bloom after their caravan gets eaten by a maw (rest, talk with them, offer help, rest again without helping) - note that while the reward for helping them is less substantial (+1 permanent Intellect pool item and some shins instead of a uber artifact), you don't get access to their shop if you don't help them, and the total power of items in the shop (especially Frost Brooch and Spine Armor combined) is arguably higher than that of a single +5 Armor artifact (note that using the granted ability of the Engine robs you of its base Armor bonus, so it's essentially either +5 Armor or a good offensive Esotery ability, but not both).

Note
Give to the megalith in Ascension to get the Zero Sum Engine.