scans of each cards can be seen at

http://www.marytcusack.com/maryc/decks/html/Cards/Heretic.html

Heretic Playing Cards by Lorenzo Gaggiotti (Stockholm17) is based on alchemy and the hermetic world. Salt (for the Jacks), Sulfur (for the Queens) and Mercury (for the Kings) are the three basic ingredients of the alchemist. This PCDB entry is for the basic Lux version of the deck, there also was a Noctis version and uncuts of each. In addition, there was a VERY limited subset of both Lux and Noctis that were signed and wax sealed called Heretic Gran Riserva. https://www.kickstarter.com/projects/requiemcards/heretic-playing-cards