March Of The Demons, The Mythic Spore War

About the adventure

Across the uneasy waters of Lake Encarthan, fear gathers like a storm. At the lake’s heart broods the lich Tar-Baphon, whose growing menace has forced the surrounding nations into tense diplomacy. Envoys and rulers convene in wary councils, debating alliances and defenses should the Whispering Tyrant’s shadow rise again. Yet while their eyes remain fixed on the dread tyrant in the lake, another threat stirs far to the south. Deep within the corrupted wilds of Tanglebriar, along the border of the elven nation of Kyonin, the demon lord Treerazer festers in exile. Long ago he tried to claim Kyonin as his own, only to be driven back by elven blades and ancient magic. Since that defeat, many have come to believe the fiend weakened, trapped within the rotting labyrinth of the Tanglebriar, too cautious to provoke the wrath of the elves again. Those who believe this have grown dangerously complacent. Within the blighted forest, corruption spreads. The land itself rots and mutates, strange spores drifting on the wind while warped creatures crawl from the undergrowth. What once seemed like a prison for a defeated demon has become the breeding ground for something far worse. Treerazer has not been hiding. He has been preparing. While the nations of Lake Encarthan argue over the looming threat of Tar-Baphon, the Tanglebriar is awakening. If Treerazer rises, the corruption of his domain will not remain confined to the forest, it will spread, rooting itself across the land. And when it does, the world will face a new and terrible conflict: the coming Spore War. Heroes will rise beyond the ordinary in this campaign, as the adventure makes full use of the Mythic Rules from War of Immortals. Characters will grow into figures of legend, wielding mythic power capable of challenging demon lords, ancient horrors, and world-shaping threats. This high-level journey spans levels 11–20 and welcomes players of all experience levels, whether you’re a veteran strategist or new to high-tier play. If you’re ready to step into the role of a true hero and help shape the fate of Kyonin, this Adventure Path offers a chance to stand among legends.