Oh! And I forgot to mention the Basic set Top Ballista; in my main campaign the characters have just defeated the Heydrech the nagpa in Serraine. Now they are looking to move their kingdom's worth of Mongai (the term I use instead of "mongrelmen") liberated from I1: the Forbidden City up into Serraine itself so they can start a new life.I use a bunch of Mystara Gazetteers, 3.x Eberron books, the Complete Necromancer's Handbook, lots of old Al-Qadim ideas and materials, Swords & Wizardry modules, World of Xoth stuff, Basic Fantasy RPG stuff, Astonishing Swordsmen and Sorcerers of Hyperboria stuff, a map of Avernus I found online that I think dates from 2e, and that's not counting materials I've written and/or published myself, most of which gets a playtest run in my game as I'm working it out.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.