D20 SYSTEM✦ Normal

The Formicid Mounds: Urns of the Collapse

# Dungeon# Intrigue# Investigation# Wilderness

The ground shudders. Above, the world speaks of a plague of giant anteaters. Below, the ancient Formicid civilization—a society of giant, intelligent ants—faces existential collapse. Their sacred tunnel network, the Mounds, is fracturing, and with it, the seals on ceramic urns holding both their ancestral memories and a terrible, world-altering plague. You descend not as heroes, but as scavengers, scholars, or zealots, drawn into a conflict where salvation for one faction means damnation for the world, and preservation for the other means a slow, inevitable death.

Chronicle Prelude

You stand at the fractured lip of the Grand Sinkhole, the only known entrance to the upper Formicid Mounds. The air smells of damp earth, ozone, and a faint, sweet decay. Around you, a tense, makeshift camp has formed: on one side, the desperate, chitin-armored Formicid Preservationists, their antennae twitching with anxiety; on the other, the pragmatic, human-led Urn Seekers, their eyes gleaming with the promise of forgotten knowledge. The ground groans beneath you—the collapse is not an event, but an ongoing, accelerating process.

Environmental Traits

The Formicid Mounds are a vast, subterranean network of tunnels and chambers, geologically unstable due to the predatory burrowing of colossal, magically-empowered giant anteaters. The immediate crisis is the collapse, but the deeper threat lies within the sealed ceramic urns: one faction seeks to destroy them to contain a primordial plague within, while the other seeks to recover them to restore their civilization's lost knowledge and power. The players' choices will determine which catastrophe—the plague or the civilizational death—unleashes upon the surface world.

Legendary Archetypes

Rayan

HP:45

STR:16

WIS: 12

CHA:11

Key Factions & Autonomous Nodes (8)

Kael, the Preservationist Scout
A young Formicid with iridescent green chitin and large, earnest compound eyes. They wear woven reed armor and carry a hooked spear. Their movements are quick and nervous, but their gaze is fixed on the players with fervent hope.
Vellus, the Urn Seeker Engineer
A grizzled, middle-aged human man with calloused hands and a perpetual frown. His leather coat is stained with mud and alchemical reagents. He carries a heavy tool belt and surveys the unstable sinkhole with a mixture of pity and grim determination.
The Muck Scribe
An ancient, hunched Kuo-Toa covered in slick mud and barnacles. It clutches a waterlogged scroll case and peers with milky-white eyes. It mutters in a gurgling tongue, occasionally switching to Common with a wet, clicking accent.
High Priestess Zyxa
A majestic, elder Formicid whose exoskeleton is a deep, regal purple, etched with countless psionic glyphs that glow softly. She moves with deliberate, sacred grace and carries a staff of living crystal. Her presence radiates a palpable aura of desperate faith.
Master Ardent
A human man in his 50s, his face lined with the scars of old battles and a deeper weariness. He wears battered but well-maintained plate armor, the Argentum insignia emblazoned on the breastplate. His sword is sheathed, but his hand rests on its pommel, a habit of command.
Tunnel Guard Swarm
A skittering, chittering mass of giant, mutated ants, each the size of a large dog. Their carapaces are a mottled brown and black, and their mandibles click in unison, forming a single, hostile hive-mind intent on defending its territory.
Clay Sentinel
A humanoid statue of packed, hardened clay and obsidian shards, standing seven feet tall. It moves with a grinding, jerky motion. Glowing runes of warding pulse on its chest and arms. It identifies intruders by the absence of a specific faction's psychic resonance.
The Dying Queen
A colossal Formicid, her once-magnificent exoskeleton now dull and cracked, weeping a faint, luminous fluid. She is physically bound to the central nursery, her movements limited to slow, pained twitches. Her psychic presence, however, floods the chamber with waves of sorrow, memory, and a final, desperate plea.

Chronicle Prelude

Environmental Traits

Legendary Archetypes

✦ Related Cases ✦

The Goblin Plight of Rivervale and the Cryptic Mine

The Adamantine Web: Silence in the Emerald Woods