n the wake of the Mourning, a new power is spreading across Khorvaire. Wherever fear and jealousy holds sway, there is a chance for an imp to whisper in an ear or a devil to slip out of the shadows with an offer that seems too good to be true. The sages of the Arcane Congress and the templars of the Silver Flame are equally baffled by this sudden wave of corruption. Who are these devils? Where did they come from, and what do they want?