This indespensable resources for the Nephilim gamemaster features:

The secret history of the Nephilim, composing a timeline from the beginning of the universe to the end of the world as we know it.
Rules for artifacts and sentient relics of amazing power.
A bestiary of new elemental creatures.
Gamemaster's advice on starting and running a Nephilim campaign.
Advice on plotting Nephilim scenarios and creating useful and interesting gamemaster-character opponents.
Guidelines on using a simple Tarot reading to create Nephilim adventures and flesh out characters.
Detailed San Francisco bay area campaign setting.