Rulebook

https://www.dropbox.com/sh/oqxpfz2bpkln4hq/AACbSiB6hRBCz-8HKdGFkNJIa?dl=0&preview=codex_rulebook_46.pdf

Card DB

codexcarddb.com

important forum posts

http://forums.sirlingames.com/t/rules-questions-thread/146/1038

state based actions

http://forums.sirlingames.com/t/rules-questions-thread/146/2

many things, including layers