Adventure Background

Adventure Background

The Emerald Legion

During the Age of Darkness (circa 3000-2000 AR), the Mwangi Expanse was plagued by a series of devastating magical blights. The greatest of these was the Crimson Mire, a sentient fungal plague that consumed entire villages and corrupted the land itself. In response, a secret order of elven rangers and mages known as the Emerald Legion was formed. Their mission: contain and neutralize magical plagues by any means necessary.

The Legion's members were marked by distinctive emerald-colored badges enchanted to absorb and neutralize magical diseases. They operated from hidden fortresses throughout the Mwangi Expanse, the greatest of which was the Heartwood Vault—a submerged fortress built into the bedrock of the Vanji River. Here, the Legion stored their most dangerous discoveries and conducted their most perilous experiments.

The Legion vanished around 3000 AR, and the Heartwood Vault was sealed and submerged. For three millennia, it remained forgotten—until now.

The Awakening

Three days ago, Elder Asha of the Magaambya detected a powerful magical resonance emanating from deep beneath the Vanji River. The pulse—rhythmic, almost heartbeat-like—matches the signature of an Emerald Legion beacon. The beacons were used to signal distress or warn of containment breaches. If the beacon is active, it means the Heartwood Vault's ancient wards have been compromised.

Already, the effects are being felt. Strange luminescent fungus is spreading through the jungle, following the path of the resonance. Animals are fleeing the area, and those that remain are aggressive and confused. The fungal blight—possibly a descendant of the Crimson Mire—is reawakening.

The party must reach the vault, determine the source of the breach, and prevent the blight from spreading.

The Spore War Connection

Unknown to the party, the fungal blight is connected to the Spore War currently ravaging the borderlands of Kyonin. A faction of fungal intelligence known as the Sporeborn has been scouting the Mwangi Expanse for sites of ancient power. The Heartwood Vault, with its vast repository of magical plague samples, is a prime target. If the Sporeborn gain access to the vault's treasures, they could unleash a plague that would consume the entire continent.