What I appreciate most about this concept is that the adventure can glom onto whatever mortal realm your party calls home. There are no locations or settings, just the introduction of some artifact that draws in the rest of these elements from beyond! The stat block designs look great and complementary. I particularly like that disrupting a Void Cutter can end an incursion by the Pale Court. The strange and valuable items supplement the goings-on well. And fantastic cover art to boot!