Ah, yes. The darkest of nights and the reflection of a casting light. In Shadow lies the powers of stealth and silence, the ultimate tool for a secretive victory.
Minor Cultural Modifier: The culture believes, for the soul to leave the body, the corpse' eyes must be open. So any member of that culture takes care any dead body they find has its eyes open. Doubly true for those they kill themselves, for then the corpse will surely rise as an undead hunting him.