Arcane Manifestation

Turn your magic into a domain—and turn the battle into a contest of control.

Arcane Manifestation is an addon for Iron’s Spells ’n Spellbooks, available for Minecraft 1.20.1 Forge and Minecraft 1.21.1 NeoForge. It adds school-specific domains, mana clashes, boss encounters, temporary barriers, and powerful combat mechanics with a heavy cost.

Your strongest supported school determines your domain. Each school brings its own combat mechanics, animated effects, and opportunities for enemies to fight back.

Manifest Your Domain

Arcane Manifestation is an instant, Legendary, level-one Eldritch spell with a default cost of 300 mana.

Cast it through a spellbook or a supported spellbook-style casting system. It cannot be cast from a scroll or imbued into equipment.

Casting creates a terrain-following indicator before a barrier forms around, above, and below the battlefield. Ordinary casting uses flowing waterfall formation. During clashes, competing domains form from behind their casters toward the contested space.

The exterior is opaque, while the interior is 45% transparent, allowing a limited view through the barrier. Moving ripples, school-specific effects, mechanic halos, and shattering fragments give each domain its own appearance.

Domain Affinity and Scaling

Your domain is selected using school affinity and spell power:

Effective points = domain affinity + (school spell power − 1) × 100

The highest supported, installed school determines your domain.

Points can exceed 500 for clashes and overwrites. Ordinary effect scaling is fixed when the domain forms and capped at 500.

Caster benefits apply while the caster remains inside the domain.

Regular player-domain direct hits use school-specific damage and intervals of 3–8 seconds. Charged attacks and warned zones have their own timings.

Domain damage respects armor and toughness. Lightning effects never summon real lightning-bolt entities.

School-Specific Domains

Successful spell hits build combat conditions at full strength. Physical hits contribute 10% as much.

Domain-generated damage cannot charge its own mechanics, and ordinary multihit casts have contribution limits.

Domains Available in Both Versions

These domains require their corresponding school provider to be installed.

Aqua uses TravelOptics’ Aqua school on 1.20.1 and Ace’s Hydro school on 1.21.1. Time uses the matching Chronomancy addon for each version.

Additional Domains — Minecraft 1.20.1

Additional Domains — Minecraft 1.21.1

Mechanic Indicators

A small halo above the caster’s head gradually fills as a mechanic charges or a warned attack approaches.

Readiness produces:

• A small glow.
• A quiet ding.
• A school-colored message, such as “Arcane Supremacy is charged.”

Symmetry uses a persistent halo that changes color with its attack or defense phase.

There is no clash HUD.

Arcane Convergence

Overlapping casts can trigger clashes between multiple players or entities.

Competing colors and ripples show the struggle for control. The winning domain completes its takeover before activating, without replaying ordinary formation.

• Player mana clashes: participants drain 30 mana per second. The last remaining caster with mana wins.
• Ordinary mob clashes: current health, maximum health, and armor are compared. Category advantages decide the outcome.
• Domain-boss comparisons: calculated domain points replace the ordinary mob categories.
• Ties: no winner is awarded.
• Rewarded clash winners: recover 50% of maximum mana, added to their remaining mana without exceeding the maximum.

Heavy movement restriction applies to clash participants and defeated casters during the relevant clash period. Simply standing in another caster’s initial indicator does not apply the same clash slowness.

Boss Encounters

Selected bosses can create their own specially named domains with signature attack patterns.

Other recognized bosses use a boss resistance clash instead of creating a domain.

Resistance clashes last 10 seconds, during which participating bosses are frozen and cannot attack.

• Passing the check gives full domain strength against that boss.
• Failing the check halves domain effects against that boss.
• Multiple bosses are checked separately.
• The eventual domain winner’s own results determine the effects.

Default boss resistance uses:

300 + 150 × (current health / maximum health) + min(50, (base armor + base attack damage) / 2)

Before external modifiers, resistance stays between 300 and 500. A 100-point caster loses this check, while a caster above 500 beats its default resistance.

Bosses that create domains instead receive calculated points:

300 + 100 × sqrt(maximum health / 1000) + 2 × base armor + base attack damage

These points can exceed 500, making different bosses meaningfully different opponents.

Domain-casting encounters come from:

• Iron’s Spells ’n Spellbooks
• L_Ender’s Cataclysm
• Mowzie’s Mobs
• Aquamirae
• TravelOptics and Illage and Spillage on 1.20.1
• GTBC’s Spellbooks and the replacement Chronomancy addon on 1.21.1

Discover which bosses can manifest domains through play.

Domain Overwriting

Cast inside an existing domain to challenge its owner.

A successful overwrite requires more than 100 points above the current owner.

The challenger’s ripple contests the existing owner’s ripple as the domain changes control. A successful overwrite changes its owner, school effects, and targets while preserving:

• The arena’s center.
• Its radius.
• Its remaining lifetime.
• Its original effect scaling.

A failed overwrite consumes the casting mana and applies the full 30-minute cooldown, with Slowness I and Weakness I for three seconds.

Barriers and Domain Immunity

Domain barriers restrict movement and teleportation. Even the owner needs an opening or domain immunity to cross the barrier.

If the owner leaves or dies, the domain ends.

Domain-immune entities can break through, creating randomized broken-glass openings. Fragments scatter before the breach repairs itself.

• Player domains: repair takes 10 seconds at zero scaling points, decreasing to two seconds at 500.
• Boss domains: repair takes two seconds.

Hostile effects apply only to eligible occupants inside the domain. Late entrants can be affected, and escaped targets stop receiving domain effects.

Allies, supported party members, pets, summons, domain immunity, and supported Deadflow Ward protection are respected. Eligible targets can include passive mobs.

Shadow Invade

Shadow Invade is a Rare, level-one Evocation channeling spell.

Touch the inside or outside of a domain’s surface and channel a dark, watery passage for 20 mana per second.

It works on:

• Domain walls.
• The roof.
• The underside.
• Either side of the barrier.

Anyone can pass through while the opening is maintained, including the domain owner.

Crossing Shadow Invade does not produce an immunity shatter burst. If the owner escapes through it, their domain still ends.

Cooldowns and Spell Exhaustion

Successful domain casting delays the cooldown until the domain ends. Casting again cancels your active domain without a second mana payment.

Manual cancellation uses:

Cancellation cooldown = normal cooldown × fraction of domain duration used

Using 10 seconds of a 60-second domain gives a five-minute cooldown.

After the domain ends, spell exhaustion lasts one sixth of the applied cooldown. A 30-minute cooldown produces five minutes of exhaustion.

Imbued weapon spells remain usable during exhaustion.

Modpack Configuration

Configure school damage, intervals, colors, boss entries, mana costs, cooldowns, and other settings through:

config/arcane_manifestation.json

Domain affinity, immunity, and player resistance attributes support modpack customization. Existing configurations are backed up during relevant migrations.

Custom spells that follow Iron’s casting and damage pipeline can participate in domain mechanics. Scripted attacks that ignore normal aiming, targeting, or projectile events may require a dedicated adapter for Evocation auto-targeting.

Compatible Mods

These labels describe integration in the corresponding Arcane Manifestation builds. They do not mean every release or unofficial fork has been tested.

Schools, Spells, and Casting

• Iron’s Spells ’n Spellbooks [1.20.1 & 1.21.1]
• Magic from the East [1.20.1 & 1.21.1]
• GTBC’s Geomancy Plus [1.20.1 & 1.21.1]
• Wind Spellbooks [1.20.1 & 1.21.1]
• Cursed School [1.20.1 & 1.21.1]
• No More Spellbooks [1.20.1 & 1.21.1]
• TravelOptics [1.20.1]
• BielGG’s Spells Addon [1.20.1]
• Draconic Spells / Draconic Magic [1.20.1]
• Iron’s Chronomancy [1.20.1]
• Ace’s Spell Utils [1.21.1]
• Asterism Arcanum [1.21.1]
• Tunes ’n Tomes [1.21.1]
• Iron’s Spells ’n Spellbooks: Chronomancy [1.21.1]
• GTBC’s Spellbooks [1.21.1]

Boss Encounters and Recognition

• L_Ender’s Cataclysm [1.20.1 & 1.21.1]
• Mowzie’s Mobs [1.20.1 & 1.21.1]
• Aquamirae [1.20.1 & 1.21.1]
• Illage and Spillage [1.20.1]
• Skarrier Mobs [1.20.1]
• Roaring [1.20.1]
• Ice and Fire [1.20.1]
• Alex’s Mobs [1.20.1]
• Alex's Mobs (Unofficial Port) by Raguto [1.21.1 - Fork of Mod]
• Alex’s Caves [1.20.1]
• Alex's Caves (Unofficial Port) by Raguto [1.21.1 - Fork of Mod]

Boss recognition does not mean every boss receives its own domain. Unassigned recognized bosses use resistance clashes.

Visuals, Teams, and Protection

• Photon [1.20.1 & 1.21.1]
• Epic Fight [1.20.1 & 1.21.1]
• Particle Rain [1.20.1 & 1.21.1]
• Better Party [1.20.1 & 1.21.1]
• Usurper Arts — supported Deadflow Ward API [1.20.1 & 1.21.1]

The NeoForge Alex’s Mobs and Alex’s Caves integrations target the supplied forks. Usurper Arts protection requires a build exposing the supported Deadflow Ward API.

Dependencies and Installation

Install the matching Arcane Manifestation jar on both client and server, with Iron’s Spells ’n Spellbooks and Photon.

School and boss addons are optional. Absent schools are skipped during domain selection.

Minecraft 1.20.1

• Forge
• Java 17
• The matching Iron’s Spells ’n Spellbooks build
• Photon 1.1.17 and its required libraries

The supplied Forge Photon jar bundles LDLib.

Minecraft 1.21.1

• NeoForge 21.1.250+
• Java 21
• Iron’s Spells ’n Spellbooks 1.21.1-3.16.3+
• Photon 2.2.7
• LDLib2 2.2.40+

The supplied NeoForge Photon jar includes KilaGraph. LDLib2 is a separate installation.

Install each dependency and optional addon’s own required libraries.

The 1.21.1 release is currently a test build. Bugs can appear, please do report it when you see one