Power System: "Eidolon Pact Protocol"
The power system revolves around contracts, systems, and evolution, designed to scale from mortal to divine level without breaking in-world logic. It includes the Solo King skill, pacts with entities, game-based progression, and soul-bound evolution.
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1. Core Foundation – The Eidolon Pact Protocol
The world is governed by a cosmic agreement known as the Eidolon Pact Protocol, a universal contract system that allows mortals to gain power by forming pacts with otherworldly beings (Eidolons).
These pacts are made through mysterious channels—rituals, websites, scrolls, or in some cases, destiny events.
Each pact bestows unique powers, typically at the cost of something: lifespan, emotion, memory, or service.
The system recognizes and classifies every pact and power through an unseen World System.
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2. Skill Tiers and Classifications
Skills are ranked and classified based on both rarity and authority.
Rank Tiers (Lowest to Highest):
H, G, F, E, D, C, B, A, S, SS, SSS, EX, Mythic (or conceptual)
Unique Ranks
King-Level Skills: These are SSS or EX-rank and possess self-awareness. They can evolve, reject users, or create laws within their framework.
System-Breaker Skills: Rare cases like Solo King, which obey all cosmic rules but function like living rule engines.
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3. Skill Types
There are three primary skill types under the Eidolon Pact Protocol:
A. Pact Skills
Given by pacts with spirits, reapers, demons, gods, etc.
Examples: Soul Reaper Pact, Flame Djinn Pact
May evolve into stronger forms when loyalty or synergy deepens.
B. System Skills
Granted by the World System, often unlocked through achievements, quests, or game events.
These include passive and active skills like "Map," "Inventory," "Status" and growth-based ones like "Battle Adaptation."
C. Inherent (Soul) Skills
Born within individuals, usually as a result of trauma, fate, or soul mutation.
Solo King is a prime example—it's a king-level soul skill awakened through multiple reincarnations and dimensional merges.
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4. Game-based Progression (Dungeon/Gamescape Layers)
In "Game of Wars" or realms like "War of Babylon," people are drawn into battle games governed by higher entities.
Here, personal powers are restricted. The rules of these zones override the Eidolon System.
Skills and stats may be locked or reduced to base state. Progress depends on strategy, resourcefulness, and in-game mechanics.
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5. Soulbound Evolution and Domains
Users who reach a certain threshold (usually SSS or EX-rank) can create Domains: personal realms or law-spaces bound to their soul.
These Domains evolve alongside the user's will, experience, and understanding.
Example: Yamino's "Domain of a Sovereign" is a reflection of his kinghood and soul.
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6. Pact Evolution and Royal Path (Unique to Solo King)
The Solo King skill introduces a royal hierarchy of evolution:
Stage Description
Crown Grants access to other dimensions and timelines
Throne Enables authority over allies and subjects
Legacy Inherits ancient king powers and weapons
Conquest Merges with Solo King's will; becomes godlike
Each of these stages requires real-world events, soul trials, or game victories to unlock.
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7. Race-Based Power Scaling
Certain races have inbuilt advantages:
Humans: Average growth, high compatibility with pacts.
Angels: High soul purity, divine power inheritance.
Subraces (e.g., Babylon Children): Born with spiritual dominance. Can influence and evolve weapons, override enemy control, and suppress free will.
Name Suggestion: Seraphic Revenants (half-human, half-angel warborns)
They can override normal skill laws in restricted zones, making them natural winners unless stopped by god-tier strategies or king-level laws.
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8. World System Limitation and Control
Every skill is monitored by the World System AI (or God Protocol), which prevents illegal evolutions or paradox loops.
However, king-level skills with will—like Solo King—can negotiate or force bypasses depending on the user's strength and domain influence.
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9. Death and Revival Mechanics
Death isn't always final. In special zones or with high-ranking pacts, users can be revived with cost.
Solo King can prevent death inside its Domain or convert souls post-death with "King of Nothing."
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10. Limiters and Balancers
To prevent pure chaos:
Only one king-level skill per soul is allowed.
Pact loyalty must be maintained; betrayal can strip power.
Game realms are equalizers—they override high-rank skills and give even basic humans a fighting chance if smart enough.
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Eidolon Pact Protocol: Two-Part Power System
The Eidolon Pact Protocol governs the mystical contract that binds Masters (humans or higher races) to Servants (Eidolons or spiritual entities). These two roles form a symbiotic bond, but each has their own power progression, restrictions, and evolution paths.
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PART 1: MASTERS
Masters are those who form pacts with Servants. Most are human, half-bloods, or gifted individuals. Some exceptional ones are chosen by the system or awaken king-level soul skills like Solo King.
Core Concepts of Master Powers:
1. Pact Bond
The Master forms a contract with a Servant, exchanging something (will, time, bloodline, emotion) for power.
The stronger the Servant, the more taxing the pact is.
A strong bond allows shared growth, fusion attacks, and soul merging.
2. Master Classes:
Tier Title Description
F Initiate Can summon Servant and use basic power
E Tamer Starts syncing with Servant; slight stat boost
D Binder Can share senses with Servant
C Controller May partially take over Servant's powers
B Commander Gains access to limited domain-level skills
A High Master Can dual-cast skills with Servant
S Pact Lord Can evolve Servant and bind multiple entities
SS Sovereign Binder Can seal or unseal Servant memories and power
SSS Throne Master Can impose laws over pacts, bend pact rules
EX Pact God Transcends pact structure, can control fate of Servants
3. Unique Master Skills
Summon Core: Call forth the Servant instantly
Shared Soul Circuit: Link soul nerves for fusion skills
Pact Evolution: Unlock new forms or rebirth of the Servant
Servant Fusion: Temporarily fuse with Servant into a hybrid form
4. Master Weakness
If the Servant is broken, sealed, or betrayed, the Master can lose everything.
If the bond is abused or neglected, the pact may collapse or become corrupted.
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PART 2: SERVANTS
Servants are otherworldly entities—grim reapers, spirits, beasts, gods, ancient kings—who accept a bond with a mortal. They gain access to the world and power growth through their Masters.
Core Concepts of Servant Powers:
1. Bound Evolution
Servants evolve based on the strength and growth of their Master.
A weak Master means limited expression of power.
A compatible Master unlocks true forms, ancient legacies, and dimensional abilities.
2. Servant Classes:
Tier Title Description
F Fragmented Wraith Barely formed spirit, unstable
E Bound Entity Basic communication and action
D Soul Beast Gains battle form and passive skill
C Named Eidolon Gains identity and personality
B Pact Warden Unlocks special weapon or element
A Eidolon Knight Can protect Master with soul shield
S Ascended Spirit Can fight independently, cast ultimates
SS Royal Eidolon Unlocks secondary element or passive domain
SSS Throne Soul Inherits memories and powers from past selves
EX Dimensional Monarch Becomes reality-bending, god-tier being
3. Unique Servant Abilities
Eidolon Core: True form hidden deep in their soul
Memory Lock: Some Servants hold ancient knowledge sealed within them
Will Burst: Can act on instinct if Master is unconscious
Soul Merge: Can share a body or consciousness with Master
4. Servant Weakness
Cannot exist freely in the world without a pact
Power is limited by the capacity and will of the Master
May be recalled, sealed, or banished by stronger pact laws
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Master–Servant Synergy Levels
Sync % Result
0–25% Basic control, forced obedience
25–50% Cooperative actions, improved casting time
50–75% Shared emotions and battlefield tactics
75–99% Dual casting, body swaps, mid-combat fusion
100% Soul Unity – Perfect fusion, access to throne-level powers, awakened domain, shared fate
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King-Level Skills & Unique Roles
Some Masters and Servants carry king-level skills like Solo King, which bypass normal limits.
King-Level Master Abilities
Rule over multiple Servants
Can create soul domains
Rewrite laws of pact using their will
Solo King: Treats all defeated entities as Servants under the crown
King-Level Servant Abilities
Can become equal partners or even dominant
May override Master in some dimensions
Hold world-ending powers or ancient law fragments