To integrate Flying Buffalo’s classic generic urban module Citybook I: Butcher, Baker, Candlestick Maker into David A. Hargrave’s Arduin setting using Adventurer Conqueror King System II (ACK II) mechanics, you leverage the strength of each component:
Flying Buffalo (Citybook I): Provides 25 detailed medieval establishments, complete with floor plans, NPCs, and plot hooks.
Arduin: Provides the high-gonzo, multi-planar, wild science-fantasy setting (Phantasmagoria, Technos, Mana Storms, and high-lethality flavor).
ACK II: Provides the tight domain management, economic modeling, market classes, and campaign structure.
Step 1: Mapping Citybook Establishments to ACK II Market Classes
Citybook I fits seamlessly into ACK II’s urban campaign rules. Classify your Arduin city (e.g., Kha-Rhea or Khyrei) by Market Class to govern availability, revenue, and hireling supply.
Class I/II Cities (Metropolis / Major Port): Access to all 25 establishments, including specialized arcanists like The Mystic Eye or high-end exotic shops.
Class III/IV Cities (Large Town): Restrict magic shops and high-tier services; replace standard NPCs with regional Arduin equivalents (e.g., a Phraint blacksmith or Deodanth leatherworker).
Step 2: Injecting the Arduin Vibe into Citybook NPCs & Locations
Arduin is defined by multi-racial weirdness, volatile magic, and technological relics. Convert Citybook I locations into Arduin landmarks:
| Citybook I Location | Standard Fantasy Concept | Arduin Conversion |
| The Silver Trowel | Standard Inn / Tavern | The Shattered Crystal: Run by a retired Amazon warrior; serves Techno-Ale and hosts interplanar travelers. |
| The Shield & Sword | Local Armory / Blacksmith | Krag’s Forge: Run by an Orcish master smith using Star Metal and Technos salvage. |
| The Magic Shop | Arcana & Components | The Void Emporium: Run by a Rune Weaver specializing in Mana Crystals and volatile Arduin grimoires. |
| Public Baths | Social Hub / Bathhouse | The Steam Sanctuary: Features thermal vents infected by minor Fire Elemental spirits. |
Step 3: Mechanics Conversion for ACK II
1. System Integration
NPC Stat Conversions: Convert Citybook NPC levels directly to ACK II Hit Dice and Attack Bonuses.
Proficiencies & Skills: Map Citybook personality traits directly to ACK II Proficiencies (e.g., Bargaining, Lair Masonry, Healing, Craft).
Economic Conversion: Convert Citybook gold values into ACK II gold piece standards (where 1 gp equals standard silver/gold standards depending on your campaign baseline).
2. Handling Arduin Lethality & Volatility in ACK II
Critical Hits & Fumbles: Use ACK II's mortal & injury tables enhanced with Arduin's famous critical damage flavor.
Mana & Magic: Integrate ACK II spell slots alongside Arduin’s volatile Mana rules—casting spells near urban magic shops risks triggerable Mana Storms
Urban Market Module: The Bazaar of the Broken Moon
Location: Lower Ward, City of Oakhaven (ACKS II Market Class II City)
Atmosphere: Dense, aromatic, high-variance urban market where Flying Buffalo-style shopkeeper routines meet Dave Hargrave's gonzo magic and ACKS II campaign economics.
Market Mechanics & Economic Framework (ACKS II)
City Market Class: Class II (Monthly Mercantile Volume Limit: 250,000 gp; Market Demand Modifier: Standard).
Monthly Shop Revenues: Base retail revenue calculated per ACKS II Merchant and Trade tables; shopkeeper profits fluctuate based on urban stability and wild magic disruptions.
Wholesale Sourcing: Exotic meats, alchemical starches, and spell-infused tallow are sourced via Level 4+ Adventuring Parties or Level 5 Trade Routes.
Key Shops & Establishments
1. Grendel’s Cleaver & Carcass (The Butcher)
NPC Proprietor: Grendel Vane (Level 3 Fighter / Merchant, Neutral). A grizzled veteran who trades exclusively in monster harvest.
ACKS II Economic Profile:
Monthly Overhead: 120 gp (rent, refrigeration charms, staff).
Gross Revenue: 450 gp/month.
Inventory Value: 1,200 gp in exotic cuts and preserved monster parts.
Arduin Wild Flavor & Hazards:
Manticore Tenderloin: 25 gp/lb. Eating a full meal grants +1 to Save vs. Poison for 24 hours. Side Effect: 10% chance of sudden quill-sprouting (cosmetic, 1d6 hours).
Displacer Beast Flank: 80 gp/lb. Grants the eater Blur for 1 turn. Requires a Save vs. Poison (ACKS II) upon consumption; failure causes spatial disorientation (-2 to Attack throws for 1 hour).
Flying Buffalo Hook: Grendel suspects rival butchers are selling fake hydra meat padded with troll flesh that regenerates inside customers' stomachs. He needs adventurers to covertly inspect the stock.
2. The Star-Yeast Bakery (The Baker)
NPC Proprietor: Madame Elspeth (Level 4 Mage / Baker, Chaotic Good). Employs planar-infused yeasts and outer-realm grains.
ACKS II Economic Profile:
Monthly Overhead: 80 gp.
Gross Revenue: 380 gp/month.
Inventory Value: 500 gp in mundane baked goods; 800 gp in enchanted rations.
Arduin Wild Flavor & Hazards:
Phase-Oat Loaf: 5 gp/loaf. Acts as 1 week of iron rations that never spoils.
Spell-Resonance Hazard: Casting any spell of 2nd level or higher within 30 feet of the active ovens triggers a Wild Magic Burst: Roll 1d6 on the Bakery Hazard Table.
| 1d6 | Bakery Wild Magic Burst Effect |
| 1 | Dough expands rapidly, filling a 20ft radius sphere (immobilizes targets, Save vs. Blast to avoid). |
| 2 | Oven heat reverses: 30ft radius chilled to sub-zero temperatures (1d6 cold damage). |
| 3 | All bread loaves within 60ft gain temporary sapience and shriek loudly for 1 hour. |
| 4 | Flammable flour dust ignites into a mini Fireball (2d6 damage, 15ft radius). |
| 5 | Yeast spores float out: creatures in 20ft must Save vs. Petrification or levitate 5ft off the ground for 10 minutes. |
| 6 | Planar rift opens in the chimney: summons a minor Air Elemental (AC 4, HD 2, hostile). |
Flying Buffalo Hook: Elspeth’s head apprentice went missing after accidentally stepping into an oven while baking a batch of Starlight Biscuits during a moon alignment.
3. Tallow & Thaumaturgy (The Candlestick Maker)
NPC Proprietor: Ignatius Finch (Level 2 Thief / Alchemist, True Neutral). Specialist in spell-bound illumination and occult candles.
ACKS II Economic Profile:
Monthly Overhead: 150 gp (expensive oils, rare wicks, holy water imports).
Gross Revenue: 600 gp/month.
Inventory Value: 2,000 gp in standard and specialized tallow products.
Arduin Wild Flavor & Hazards:
Grave-Wax Pillar: 15 gp. Burns for 6 hours. Undead within a 30ft radius take a -2 penalty to Morale and Attack throws.
Phantasmal Tallow: 40 gp. Illumines invisible objects and creatures in a 15ft radius while burning.
Extinction Mishap: Extinguishing an enchanted candle improperly (e.g., blowing it out instead of using a snuffer) triggers an Arduin-Style Mishap: Roll 1d8.
| 1d8 | Extinction Mishap |
| 1-4 | Smoke forms a shadow sprite that steals 1d50 gp from the nearest pouch. |
| 5-6 | Flash-blindness: All within 10ft are blinded for 2d4 rounds (Save vs. Paralysis negates). |
| 7 | Sudden implosion of light deals 1d8 force damage to the person who extinguished it. |
| 8 | The candle's stored spell backfires, dealing 2d10 disintegration damage to held items. |
Flying Buffalo Hook: Ignatius bought a shipment of fat harvested from a defeated Gorgon. He needs protection while rendering it, as the fumes might turn the block to stone.




