Game Masters Toolbox - Critical Rolls Box SetCritical Rolls introduces a variety of new effects to the triumphant natural 20 and the dreaded natural 1, including critical hit effects for GMs and players, critical fails, and a good and bad luck mechanic for criticals rolled in and out of combat. This boxed set includes five 60 card tarot sized decks, including: Critical Fails Critical Hits for GMs Critical Hits for Players Bad Luck Good Luck