Atlantean Trilogy Archive
A panorama of skills: an acrobat leaping, a scribe writing, a thief climbing a moonlit wall, a tracker, a lyre player and sparring fighters.

Alchemical Devices

Skill, Magical/Alchemical

Building small alchemical gadgets such as secret-compartment rings and poison-needle rings, plus detection devices that only alchemists can operate.

From the book

Alchemical devices are small crafted gadgets made with a 25 GP set of metalworking tools, a 25 GP set of glassworking tools and a workspace or lab. Each takes a week (a rod of detection, two) and succeeds 75% of the time plus 2% per level.

Some are jeweler's tricks: a ring with a hinged, hollow top that holds a dose of toxic powder, and a ring whose stones, pressed the right way, flick out a quarter-inch needle that can be laced with venom. Others are optics of alchemical glass. A polished crystal prism lets an alchemist study refracted light for a minute and save vs Intelligence to expose an illusion. Cusps, tiny lenses worn on the eye, give night vision to 60 feet, but wearing them past an hour risks blindness. Lenses act like magnifying glasses for searching walls and floors for secret doors and traps, a minute per 10x10-foot section. A spyglass magnifies up to 100 times and anyone can use it.

The alchemist can also design puzzle locks, craft glowing glass wands of phosphorescence from fireflies and toadstool that light a 10-foot radius for d4+1 hours and recharge in sunlight, and cast a Y-shaped rod of detection from many metals and all 12 gemstones that senses one chosen metal, element or gem within 20 feet. Only alchemists can use prisms, cusps and rods of detection.

At a glance

Skill group
Magical/Alchemical
How it works
75% +2% per level; 1 week per device (2 weeks for a Rod of Detection)
Requires
25 GP metalworking tools, 25 GP glassworking tools and a workspace or lab
Learned by
Alchemist (2)
Rod of detection
Finds one metal, element or gem within 20 ft; usable once per day per level; 10 minutes per use
Cusps
Night vision to 60 ft; +5% blindness risk per 40 minutes beyond 1 hour

No XP cost is given in the acquisition table. Only alchemists can use cusps, prisms and rods of detection.