Celestial Codex

The Eternal War on Amtgardia

From the Introduction:

[T]his tome follows the precedent of forging a new, common storyline or campaign arc in which to set an unimaginable number of role-playing scenarios, monster-ridden quests and plain ol’ battlegames. The premise is as simple as it is eternal: There is a war going on, a war that most humans never know exists. The war is fought every day, around the world and throughout time. The rewards are the immortal souls of the living and the warriors are the very agents of Darkness and Light, Good and Evil ... The Heavens and the Hells.