The dragon hinted at previously indeed made its way down into the fray, mauling Millaena as it landed. Caiden, seeing the party faltering under the burden of enormous amounts of negative energy, sacrificed what magical power he had remaining in order to restore everyone present to their fullest strength.
Caiden’s sacrifice worked, but it left the remaining party members without any dedicated healers. Arrayed against them were a corrupted dragon that could inflict negative energy in addition to its already incredible attacks, and the undead avatar of Kel’Dan Melir, a powerful spellcaster in its own right.
Things reverted quickly to their previously horrible state.
Caiden’s sacrifice did allow the remaining party members (Dusan, Derek, Takeo) to distract the dragon and avatar long enough for Simon to destroy the focus for the anti-life shell around the fallen monastery, as well as destroy the altar maintaining the unhallow spell the party had been fighting inside. Simon was swiftly grappled by the dragon afterwards. Takeo and Derek had already fallen to the beast. The fly spell Simon had cast on Dusan turned out to have been for naught, as the avatar channeled enough negative energy into Dusan to put him near death.
Thankfully, a miracle occurred: a small group got the drop on the avatar and the dragon. The black dragon (who insisted we refer to it as Agnes) came down with a human male and some sort of fey female, who held the two creatures at bay long enough for Simon to port back to his volcano lair with the unconscious party members.
The fey female (who goes by Dax) met with Simon the next day to arrange for healing for the unconscious and near-death members of the party. Everyone was transported to a forest where Dax’s “people” had already been at work healing Lady Fireborn after rescuing her. The fey set about beginning the long and involved attempt to heal the party.