Wizards Of The Coast
D&D’s Explorer’s Guide to Wildemount is an excellent teaching tool for new Dungeon Masters
I don't feel like I need to convince you to buy the D&D's Explorer's Guide to Wildemount -- if you're playing D&D, then you probably already know about Critical Role and Matt Mercer's campaign setting for that long-running, streamed D&D series.
Off Topic: Baldur’s Gate 3 finally has the teaser trailer we’ve been waiting 19 years for
Few game series have had the footprint of the Baldur's Gate series.
You got your Diablo in my Dungeons and Dragons
One of the first books I ever bought for the Third Edition of the Dungeons and Dragons RPG was, of all things, a Diablo themed sourcebook, named Diablerie.