The Obsidian Emporial is a bidding house of some fame in Footfall and the greater Koronus Expanse. Run by the mysterious and quite discerning Intercessors, the Obsidian Emporial provides a select few individuals with a place to sell items or information too rare and valuable for a trade-deck stall. The Intercessors organize auctions and manage deals, payments, and collections. Often, unless they wish otherwise, neither the buyer nor the seller will even know whom the other are. The Obsidian Emporial does not wield any obvious power in Footfall. However, none of the other factions are willing to cross it, and those few whom have failed to pay their debts to the Intercessors eventually and inevitably vanish.
Speculations and rumors point all evidence to Deamons and possibly some Eldar god.