Can we help?
Lux et Tenebrae expands Res Arcana to 5 players and adds new mages, magic items, monuments, places of power, and artifacts, including a new artifact type: demons.
Lux et Tenebrae also adds scaling rules for games with fewer than 5 players, which tightens 2-player games and adds another place of power to 4-player games, while ensuring more uncertainty as to which monuments are in a given game.