Tyrants & Hellions

From the publisher's web site: Tyrants & Hellions is a Dungeon Master's aide, containing fifteen villains complete with schemes, lairs, backstories, and everything else you need to drop them into your own 5th Edition Dungeons & Dragons campaign. Within its 300 pages you'll also find the methods, both mechanical and thematic, used to create villains that spark the imaginations of your players.