The 13th Seal
A new organization that sprang up since the planar incursion incidents. They quickly set up outposts in almost every major city. The group is apparently comprised entirely of Eladrin. They claim to be masters of planar teleportation who can send you anywhere you want to go in the cosmos.
The name refers to an old religious text which describe the gates which the gods put in place to divide opposing concepts. For instance, the 1st seal divides day from night. The 2nd seal divides earth from sky. The 3rd seal keeps water separate from land. The 13th seal is the final one, which is barrier between life and death. It is said that mastery over these dividers are what gives deities their power.
Upon visiting the Abelurn outpost the group found the place was filled with Oni disguised as Eladrin. The portal was connected to a matching one in the sound proofed basement of the same building. Travelers would then be chained up, robbed and eaten over a prolonged period. The party mostly dispatched the Oni, freed the surviving prisoners and claimed the portal gate as their own.