The Quasit Alchemist

There was once an alchemist who had a quasit as his familiar and laboratory assistant.  As the years wore on the alchemist passed, but the Quasit had such an understanding and love of alchemy that he continues.

Now the Quasit builds alchemical constructs that serve him in the Skein, help him make new potions and get sent out to look for reagents and ingredients.  These constructs can take potions into themselves to perform certain types of effects based on the potions (so destroying one and extracting the potion vessels is a good way to get some potions).

There may be a more permanent one that is made of some sort of earth and is costly, but there is also several that are made of mud, earth, clay or wood that may travel about in the environs looking for ingredients for new potions, or to tend to vis sources.