Elemental Flux

Source Advanced Race Guide

This flask of alchemical powder reacts to the elemental power in suli blood. Adding at least 1 hit point worth of suli blood to it creates an alchemical splash weapon. The splash weapon works like a flask of acid, except the damage is a random energy type (acid, cold, electricity, or fire). A DC 10 Craft (alchemy) check identifies what energy type the activated flask has. The activated flux retains its power for 24 hours before becoming inert material. The Craft (alchemy) DC to create this is 20.