Chult is home to unique flora and fauna, from the Assassin Vine to the Su-Monster. The Tomb of Annihilation PDF serves as a monster manual for this region. It provides the stat blocks for all the new creatures. DMs use the digital resource to verify special abilities during combat. The text also explains the uses of local plants like Ryath Root. Having this information searchable means the DM can reward creative players who use the environment to their advantage. The PDF puts the ecology of Chult at the DM's fingertips.