Question: What system was developed by Margaret Weis Productions was used in a game based on the Supernatural TV series?
Sentence (from "Cortex System"): It was subsequently used for their licensed "Battlestar Galactica" and Supernatural RPGs, and brought out as a stand-alone system in the "Cortex System Role Playing Game" book (also called the "Cortex Classic System Role Playing Game").
Relevant evidence: No