I'm currently running a Dawnforge campaign. It is set in the weeks leading up to the Long Night, a time during which the planar boundaries between Itheria and the fey kingdom in the Sildanyr is weakened, causing the fey to become wild and dangerous creatures. Something else is happening, however, and the dawn elves have erected a strange, shimmering ward that covers most of the elven forest. The characters have explored the catacombs that snake throughout the plateau beneath Elnaria, navigated the chaotic political situation in Saranor, and are now braving the increasingly dangerous and unpredictable fey to explore an abandoned tiefling outpost deep in the heart of Sildanyr.