The Darkest Heart was the ninth adventure released for the Cabal of Shadows Faction Adventure to be run as part of the Xen'drik Expeditions campaign.
Synopsis
Adventure Start: The PCs attend a meeting where they receive their assignment to retrieve the " Darkest Heart " from the tomb-shrine of K'naga-oliana . After the meeting, the different Obscura of the Cabal of Shadows receive their secondary orders.
Part One: The PCs journey to the tomb-shrine and on the way there they are attacked by scorrows and monstrous scorpions .
Part Two: The PCs arrive at the tomb-shrine complex, now mostly in ruins, and explore it. During the exploration they are attacked by hill giants and dire wolves .
Part Three: The PCs explore the tomb-shrine and discover the "Darkest Heart" is a large Eberron Dragonshard . Taking the Eberron Dragonshard causes Eberron to become coterminous with Mabar the Plane of Endless Night at their location. Shadows emerge and attack the PCs.
Part Four: The PCs return to Stormreach and meet with the Council of the Obscured . There they learn they must hand over the "Darkest Heart" to Osien Terth of the Arclight Battalion . The meeting site is compromised and they have to deal with the people sent to take it.
Ending the Adventure: The adventure concludes and the PCs receive their rewards.