Adventurers League Dungeon Master's Guide (Tomb of Annihilation)

From the introduction: The D&D Adventurers League is the official organized play system for Dungeons & Dragons. Players can create characters and participate in any adventure allowed as a part of the D&D Adventurers League. As characters adventure, the players track their characters’ experience, treasure, and other rewards, and can take those characters through other adventures that will continue their personal story.