Alkahest's Ice

Alchemy [Alkahest] - Expert
Time: PT10H
Value: 100 gp

Tools: alchemist's supplies
Ability Check: DC 15 Intelligence check
Properties: fluid, volatile
Description: This sticky, adhesive fluid, draws heat from the surrounding area when exposed to air. As an action, you can throw this flask up to 20 feet, shattering it on impact. Make a ranged attack against a creature or object, treating the alkahest's ice as an improvised weapon. On a hit, the target takes 3d4 cold damage at the start of each of its turns. A creature can end this damage by using its action to make a DC 15 Dexterity check to scrape off the fluid.