Of course, James always has fantastic writing. But did you know that this Abyssal Incursion features a House Lyrandar airship? Talk about a crossover! It's a great opportunity for any Dungeon Master running Descent into Avernus to gauge their players' interest in the new Eberron sourcebook, releasing 11/15/19.
As an Adept, there are several great official WOTC art pieces in this adventure that make it stand out, but it's Kayla Cline's cartography that really steals the show in this supplement. The most memorable map is by far the creature based dungeon for the Demon Lord Yeenoghu's bloated and voracious pet, Crokek'toeck! It's sure to be a location to remember.
Lastly, there's two great new magic items here, the Butcher and Heartcleaver, legendary weapons belonging to Yeenoghu and Baphomet, respectively.
I think you're going to like this one.