The Aethervale

Command Palette

Search for a command to run...

Admin
quest

The Frost-Mantle Rebellion

The Frost-Mantle Rebellion

Campaign: The Frost-Mantle Rebellion

Location: The Frozen North, Bone-Fields of the First King, Cinderforge Hold Level Range: 12-17

Campaign Overview & Themes

  • The Core Conflict: Deep in the Frozen North, the fire giant Jarl Throm-Ka has been corrupted by the psychic whispers of Ignis-Kaan, an ancient red dragon of the First Brood trapped beneath the ice. Throm-Ka has subjugated the frost giants and other northern tribes to build a massive war machine, intent on melting the polar ice caps and triggering a global "World-Fire." The players must brave the apocalyptic cold, unite the fractured resistance, and overthrow the Jarl before his crusade begins.
  • Tone & Tropes: High fantasy, brutal survival, and epic warfare. Themes include the corruption of leadership, the clash of elemental extremes (fire vs. ice), and leading a rebellion against insurmountable odds in a hostile environment.

The Sandbox / Regional Guide

  • Base of Operations: The Rime-Shell Fortress. A massive, hollowed-out glacier that serves as the hidden refuge for the Frost-Mantle clan. It is freezing but defensible. The players can upgrade its forges (using salvaged enemy tech) and recruit different monster tribes to join the rebellion.
  • Key Locations:
    • The Bone-Fields of the First King: A vast, frozen tundra littered with the gargantuan skeletons of prehistoric beasts. It's a prime scavenging ground but haunted by undead behemoths and ferocious blizzard-elementals.
    • The Howling Canyons: A network of deep, wind-scoured ravines. The wind here is so strong it can push characters off ledges and masks the approach of ambush predators.
    • Cinderforge Hold: The capital city of Jarl Throm-Ka's empire, built around a massive active volcano jutting out of the ice. It is heavily fortified, industrialized, and populated by fire giants and enslaved dwarves.
    • The Deep-Ice Crevasse: A bottomless chasm that supposedly leads to the prison of Ignis-Kaan. The ice here glows with an eerie, pulsing red light, and the ambient temperature fluctuates wildly between absolute zero and unbearable heat.

Factions & Reputations

  • The Frost-Mantle Clan: The traditionalist frost giants who refuse to bow to Throm-Ka. They are proud, stubborn, and few in number. Earning their respect requires feats of immense strength and surviving their brutal trials.
  • The Cinder-Skull Legion: Jarl Throm-Ka's army of fire giants, corrupted frost giants, and enslaved goblins. They are heavily armored, highly organized, and wield volcanic weaponry.
  • The Ice-Carvers: A tribe of nomadic yeti and winter wolves who possess deep knowledge of the region's ancient magic. They are completely isolationist and view both giant factions as destructive intruders.
  • The Steamfort Exiles: A group of dwarven engineers who fled the industrial city and now survive in the tundra. They can provide crucial intelligence on Cinderforge's defenses if the players can protect them from the elements.

The Villains & Lieutenants

  • The Big Bad: Jarl Throm-Ka. A massive fire giant wielding a hammer forged from a shard of the First Brood's scale. He is completely deluded, believing the World-Fire will purify Aethervale. He is incredibly strong and commands powerful fire magic.
  • The Timeline of Doom:
    • Month 3: Cinderforge Hold completes its first fleet of "Magma-Dreadnoughts" (land-ships powered by lava). The Bone-Fields are conquered and strip-mined for resources.
    • Month 6: Throm-Ka initiates the "Great Melt," using a massive geothermal engine to begin rapidly melting the glaciers. Coastal cities far to the south report massive, sudden sea-level rises.
    • Month 12: The ice above Ignis-Kaan's prison shatters. The dragon awakens and joins Throm-Ka, leading the World-Fire crusade south, effectively ending civilization as it is known.
  • Lieutenants:

The 5-Act Structure

  • Act I: The Inciting Incident (Levels 12-13): The party arrives in the Frozen North to investigate the sudden influx of fire giant refugees pushing southward. They are caught in a massive blizzard and ambushed by a Cinder-Skull patrol, leading them to be rescued by the Frost-Mantle Clan.
  • Act II: The Sandbox (Levels 13-14): The players must earn the trust of Shaman-King Varrok of the Frost-Mantle. They explore the Bone-Fields to recover ancestral relics, negotiate with the Ice-Carvers, and disrupt Cinder-Skull supply lines.
  • Act III: The Turning Point (Levels 14-15): The Cinder-Skull Legion launches a massive assault on the Rime-Shell Fortress using the Magma-Wyrm. The players must orchestrate the defense, utilize salvaged weaponry, and defeat the beast. Following the victory, Varrok declares the party as Champions and the rebellion officially begins.
  • Act IV: The Escalation & Assault (Levels 15-16): The rebellion marches on Cinderforge Hold. The players lead a surgical strike team to infiltrate the city, sabotage the geothermal engines powering the Great Melt, and assassinate General Rask and the Volcanic Oracle.
  • Act V: The Climax (Levels 16-17): The final confrontation in the heart of the volcano. The players face Jarl Throm-Ka as he attempts to complete the ritual to shatter the ice below. The battle takes place on platforms suspended over a lake of boiling magma, with the psychic roars of Ignis-Kaan causing reality to warp around them.

Dungeons & Set Pieces

  • The Labyrinth of Absolute Zero: A trial to prove the party's worth to the Ice-Carvers. Gimmick: The dungeon is so cold that standing still for a full round inflicts cumulative freezing damage (1d6, then 2d6, etc.) and reduces movement speed. Players must constantly move, utilizing heat-sources they find or create to reset the damage counter while fighting ice-golems.
  • The Magma-Dreadnought Sabotage: An infiltration mission onto a moving, colossal land-ship. Gimmick: The ship is constantly moving over rough terrain. Every round, players must make Acrobatics or Athletics checks or be thrown prone as the ship lurches. The goal is to reach the engine room and cause a controlled meltdown without destroying the ship immediately.
  • The Core of Cinderforge (Final Dungeon): The interior of the volcano where gravity is distorted by the immense magical energies. Gimmick: Gravity shifts orientation every few rounds based on the activation of different elemental runes. Players must fight Throm-Ka while dealing with falling upwards towards the ceiling or sideways into pools of magma.

Evolving Loot & Vestiges

  • The Glacial Aegis: A shield carved from True-Ice.
    • Dormant (Level 12): Grants resistance to cold damage and allows the wearer to cast Armor of Agathys (3rd level) once per short rest.
    • Awakened (Level 14): The shield can project a 15-foot cone of freezing wind (saving throw or be restrained by ice). Allies within 5 feet are protected from extreme weather conditions.
    • Exalted (Level 16): Once per day, the wielder can slam the shield into the ground, creating a massive "Glacial Wall" (as Wall of Ice, 6th level) that absorbs fire damage and heals the wall for half the damage absorbed.
  • Cinder-Bane Greataxe: A weapon forged from a shattered dragon scale.
    • Dormant (Level 12): Deals an extra 1d6 cold damage. When striking a target with fire resistance or immunity, it ignores that resistance.
    • Awakened (Level 14): Critical hits with this weapon inflict "Frostburn," causing the target to take 2d6 cold damage at the start of their next three turns.
    • Exalted (Level 16): The wielder can cast Investiture of Ice once per day. While active, every successful melee attack sends a shockwave of cold, dealing 1d8 cold damage to all enemies within 10 feet of the target.