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Dark Doppelganger

A high-difficulty boss mod for 1.20.1 and 1.21.1 inspired by dark magic, spellcasting combat, and multi-phase encounters and Heavily by Irons Spells and Spellbooks!

The Dark Doppelganger is a powerful spell-casting enemy that mirrors player strength, summons minions, and escalates as the fight goes on.

🧿 The Dark Doppelganger Boss

The Dark Doppelganger is a multi-phase boss fight designed for experienced players.

Boss Features

Multi-phase combat with increasing difficulty
Spellcasting melee and ranged attacks
Teleports back from the void if knocked off the world
Summons hostile minions during combat
Dynamic boss music and boss health bar
Scales stats and abilities based on configuration
Designed for multiplayer encounters (supports multiple players fighting at once)

🔮 Boss Phases

Phase 1: Standard spellcasting and melee attacks
Phase 2: Increased aggression and new spell combinations
Final Phase: Frequent minion summoning, life-drain abilities, and high pressure combat

The boss cannot be cheesed easily and is intended to feel like an end-game encounter.

👁️ Minions

The Dark Doppelganger can summon hostile minions during the fight.

Minion Behavior

Attack players aggressively
Do NOT attack the boss or other boss minions
Automatically choose nearby players as targets
Despawn when the boss is defeated
Not player-owned and cannot be controlled

Minions are designed to pressure players, not act as companions.

Custom Items

items

Shadow Orb - Summon Doppelganger item
Doppelganger - Ring +150 Mana +30 Health
Elder's Necklace - +200 Mana +25% Eldritch Spell Power
Summoner Necklace - +225 Mana +25% Summon Damage

📜 Custom Spells

This mod includes two custom spells, used by the boss and its minions.

Jump Portal - Jump/evade fast spell

portal

Summon Minion - Lets you summon your own minion

minion

⚠️ Important

Summon Minion spell is NOT learnable by players and does not appear in the Scroll Forge.

These spells are used exclusively by the Dark Doppelganger and its summons, but defeating the boss gives you a chance at a spell drop!

🧙 Spellcasting System

Uses Iron’s Spells & Spellbooks
Fully integrated with spell schools, effects, and animations
Compatible with other spell-based mods

How to Summon the Dark Doppelganger

⚠️ The Dark Doppelganger is intended to be a dangerous encounter.

Use a Shadow Orb in the End. Throw it into the void.

⚙️ Configuration

Most values are configurable:

Boss health
Damage
Armor
Spell power
Minion strength
Hard Mode toggles

⚔️ Intended Experience

Challenging, cinematic boss fight
Multiplayer-friendly
Spell-heavy combat
No PvP abuse or player-owned combat minions
Designed for late-game or modpack progression

🖤 Final Notes

This mod is built to feel like a true magical boss encounter, not a standard mob fight.

Prepare well.

Good luck.

Dependencies

1.21.1 Now available for NeoForge

To enjoy the Dark Doppelganger mod, ensure the following dependencies are installed:

Forge (Version: 47.4.10 or higher)
Iron's Spells 'n Spellbooks (Version: 3.15.0 or higher)
Curios API (Version: 5.7.0+1.20.1 or higher)
Caelus API (Version: 3.1.0+1.20 or higher)
GeckoLib (Version: 4.4.5 or higher)
Player Animator (Version: 1.0.2-rc1+1.20 or higher)

Dark Doppelganger : Iron's Spells and Spellbooks Addon