Fate Weaver

What is Fate Weaver?

A Monte Carlo combat simulator that runs 10,000 simulated rolls to calculate the real probabilities behind your attacks, strategies, and encounters. Instead of guessing — you get hard numbers.

Attack Analyzer

Pick a character and an attack, set the target AC, and see the full probability breakdown: hit/miss/crit chances, average damage, and damage distribution chart.

• Cantrips — heightened to rank 3 (level 5). Save-based cantrips (Electric Arc, Frostbite) use spell DC vs target's save.
• Spells — leveled spells from each character's actual spell list. AoE spells (Fireball, Breathe Fire) use save-based resolution.
• Weapons — physical attacks with full Multiple Attack Penalty support (-5/-10, or -4/-8 for agile).
• Sneak Attack — Aisa's Fork entries marked (Sneak) include +2d6 precision damage. Entries without it show base damage only.

Toggle Off-Guard for -2 AC, or apply active Condition Tracker modifiers.

Strategy Optimizer

Compare different 3-action turn strategies side by side. Build custom action sequences from each character's weapons, spells, and tactical actions (Demoralize, Move, Raise Shield).

Multiple Attack Penalty is auto-calculated based on Strike position in the sequence. Non-strike actions (Demoralize, Move) don't advance the penalty.

Encounter Simulator

Simulate full party-vs-monsters combat. Select party members, add enemy groups from presets or custom stats, and run the battle 10,000 times.

• Simple mode — hardcoded class-based tactics. Each PC gets 3 actions/turn with built-in behavior (bless, heal, sneak attack, raise shield, demoralize). No configuration needed.
• Tactical mode — characters follow selectable behavior profiles with spell slot tracking. Configurable strategies per character.

Both modes include: flanking, Bless, healing, Champion Reaction, Raise Shield, Demoralize, and position (front/back).

Results show win rate, difficulty rating (Trivial/Low/Moderate/Severe/Extreme), average rounds, and per-character casualty rates.

Simple Mode — Turn Behavior

Character	Round 1	Next Rounds
Ash	Bless 2ACantrip 1A	Heal 2A if ally <50% HP, else Cantrip 2A + Sustain 1A
Elira	Rank 3: Fireball AoE 2A. Rank 2: Blazing Bolt 2A. Rank 1: Breathe Fire AoE 2A. No slots: Cantrip 2A. R1: + Demoralize 1A
Aisa	Strike 1A + sneak if flanking, Strike MAP 1AStride 1A
Miyako	Strike 1AStrike MAP 1AShield 1A
Shtar	Strike 1ADemoralize 1AStrike MAP 1A	Strike 1AIdle 1AStrike MAP 1A

Built-in: Flanking (≥2 front allies → off-guard −2 AC + sneak attack), Bless (+1 atk), Shield (+2 AC), Champion Reaction (−7 dmg), Heal (1d8+8). Enemies: 2 strikes/turn.

Tactical Mode — Profiles

Ash (Oracle)

Profile	Behavior
Support	R1: BlessCantrip. Ally <30%: SustainHeal 2A. Ally <60%: SustainHeal 1ACantrip. Default: SustainCantrip
Aggressive	Ally <30%: Heal 2ACantrip. Default: CantripDemoralize. No Bless.

Elira (Sorcerer)

Profile	Behavior
Blaster	Rank 3: Fireball 6d6Demoralize. Rank 2: Blazing Bolt 4d6Demoralize. Rank 1: Breathe Fire 2d6Cantrip. Default: CantripDemoralize
Cautious	Always: CantripStride back. No spell slots used.

Aisa (Rogue)

Profile	Behavior
Flanker	If flanking: Strike+SneakStrike+Sneak MAPStride. Else: Stride frontStrike+SneakStrike MAP
Ranged	Always: Thrown+SneakThrown MAPStride back

Miyako (Champion)

Profile	Behavior
Tank	StrikeStrike MAPRaise Shield
Aggressive	StrikeStrike MAPStrike MAP2

Shtar (Gunslinger)

Profile	Behavior
Sniper	Drake RifleDemoralizeJezail MAP
Aggressive	Drake RifleJezail MAPPistol MAP

Tactical mode also has "What-if" analysis — shows how win rate changes without Bless, Flanking, Shield, Champion Reaction, Healing, or Demoralize.

Assumptions & Limitations

• All character data is based on level 5 stats from actual character sheets
• Monster save bonuses are estimated from AC: (AC - 10) / 2 + 3
• Positioning is simplified to front/back (no grid movement)
• No reactions except Champion's Liberating Step (reduce 7 damage)
• Spell slots are consumed per encounter in Tactical mode; signature spells are not auto-heightened in the simulator
• Demoralize applies Frightened 1 (-1 to AC/attacks) on success