Arthaus

If you’d like to campaign in Azeroth, this book is packed with history and lore for the setting. Combine it with some Prima dungeon guides and the world building is done for you.

This is a simulated Tarot-inspired deck of cards, intended as a roleplaying aid to the Ravenloft campaign setting. The artwork is literally gorgeous as far as gamer art. Even if you never use the deck you might find yourself getting them out every now and then just to admire the picures. It includes a booklet of rules instructions (more like suggestions, really). Highly recommended as a tool to aid and add flavor to your games.