Omen: A Reign of War

AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant

Overview

Omen: A Reign of War is a two-player card game of Greek mythology in which players deploy Soldiers, Beasts, and Oracles to three cities, fighting for Reward Cards and completing Feats to earn victory points. Players alternate turns managing resources, playing units, and resolving battles. The game ends when 2 cities are depleted of Reward Cards or one player completes 5 of 6 Feats.

Components

Setup

  1. Shuffle the 174 Unit Cards; place them face down as a draw deck.
  2. Place 40 coins beside the deck.
  3. Shuffle the 12 Reward Cards; deal them into 3 equal face-down stacks forming 3 Cities.
  4. Each player takes their 6 Feat Cards (placed face up) + draws 4 Unit Cards + takes 4 Coins.
  5. The oldest player is the First Player.

Optional beginner rule: Use only the 24 unit types marked with a single circle on the card.

Turn Structure

Players alternate turns. Each turn has 6 steps:

Step 1: Wealth

Step 2: Surge

Step 3: Portent

Step 4: Feat

Step 5: War

Step 6: Offering

Actions

Action Details
Gain resources Wealth Actions: 1 coin or 1 card each
Play Unit Pay Cost, place at a City
Discard Beast Pay Cost, activate ability, discard
Use Reward 1 per Surge Step; place face down
Activate Oracles Portent Step
Offer Discard 1 unit for its Offering Value

Scoring / Victory Conditions

Game ends when:

Scoring:

Source Points
Face-down Feat Card 2 VP each
Reward Card in hand (unused) 2 VP each
Face-down Reward Card (used) 1 VP each

Tiebreaker: Player with more face-down Feat Cards wins.

Special Rules & Edge Cases

Player Reference

Turn order: Wealth → Surge → Portent → Feat → War → Offering

City Limit: 5 units per player per City (Beasts = 2)

War triggers: Opponent has 3+ units OR 5+ total units at a City

War winner: Keeps 1 unit; Loser keeps 2; Winner takes top Reward Card

End game: 2 Cities depleted OR opponent has 5 Feats