Tomb of Annihilation
Tomb of Annihilation is a self-contained adventure module for Dungeons & Dragons 5th Edition. Set in Chult, the dinosaur-inhabited tropical jungle region of southern Faerun, it is a spiritual sequel to the Tomb of Horrors.
The plot kicks off when a strange, magical curse begins affecting everyone who has ever been resurrected from the dead, causing them to slowly weaken day by day until they die, irrevocably. The "death curse" is due to the machinations of the demi-lich Acererak (better known as the creator of the Tomb of Horrors), who has constructed a trap-riddled tomb deep in the jungles of Chult to house a necromantic artifact called the Soulmonger; this is feeding on the souls of every individual who has ever been resurrected in order to strengthen an atropal, which Acererak hopes to somehow transform into a full-fledged undead deity under his control.
The party must make a race against time to find the tomb and penetrate its traps so they can disable the machine and destroy the atropal before Acererak's plans come to fruition.