From Ardrana

Ztevys is a Human alchemist from Rabk who specializes in constructing explosive devices in varying sizes and strengths. He then sells these devices from a shop he runs in the city. His work is sought after both for use in demolition and as fireworks for display. He has been working to find a new apprentice since his previous one, Mello Yellow, left his service several years ago to become an adventurer.