Vampirism Iron's Spells Compatibility

Vampirism Iron's Spells Compatibility

Vampirism mod now integrated with Iron's Spells Blood magic. Use your blood to reduce cooldowns, use blood ray and bite to restore blood! Also aware of Holy spells!

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About this Mod

Vampire Spells Addon

Vampire Spells Addon connects Iron's Spells 'n Spellbooks with Vampirism and
changes selected spell behavior for vampire players.

Current behavior

  • Ray of Siphoning and Devour restore configurable Vampirism blood to a vampire
    caster from delivered health damage. The amount is observed after absorption
    and other damage processing, excludes overkill by capping it to the target's
    health before the hit, and never requests more blood than the caster can hold.
  • By default, a vampire pays mana for every mana-consuming Blood School spell.
    When the full mana price cannot be covered, every such spell except Ray of
    Siphoning falls back to an atomic blood payment and spends no mana. If the
    blood price cannot be paid in full, the spell effect is stopped without a
    partial debit.
  • alwaysUseBloodForVampireBloodSpells = true changes those non-Ray casts to
    blood-only mode even while mana is available. Creative casts, non-mana cast
    sources, and recasts keep their normal free-resource behavior. Ray of
    Siphoning always keeps its normal mana cost and continues to restore blood.
  • Devour's configurable mana multiplier still applies only to vampire casters;
    its scaled final price is also the basis for a blood payment. Every Blood
    School spell cast by a vampire uses
    vampireBloodSpellCooldownMultiplier, which defaults to 2/3 for a
    cooldown that is 1.5 times shorter.
  • A vampire's Ray of Siphoning animates toward the caster rather than toward the
    target. Its guide text also explains the spell's night-creature origin in all
    languages supported by Iron's Spells.
  • Holy spell damage dealt to a Vampirism NPC vampire is doubled regardless of
    who cast it. Delivered holy health damage reflects onto a vampire player
    caster.
  • Holy healing damages vampire casters/targets and suppresses the corresponding
    heal. Holy utility spells damage a vampire caster, clear any targeting data
    created during pre-cast checks, and cancel the cast.
  • Cast and heal correlation state is bounded and cleared on lifecycle
    boundaries so nested or interrupted actions cannot affect an unrelated later
    action.
  • Server-side tuning is stored per world in
    <world>/serverconfig/vampire_spells_addon-server.toml.

Requirements

Minecraft Loader Java Vampirism Iron's Spells
1.21.1 NeoForge >=21.1.200 and <21.2 21 >=1.10.7 and <1.11 >=1.21.1-3.14.3 and <1.21.1-4
1.20.1 Forge >=47.4.0 and <48 17 >=1.10.7 and <1.11 >=1.20.1-3.15.0 and <1.20.1-4

Support development

Support me with a donation ✨

Your support motivates me to continue developing and maintaining this project. Thanks!

Available Versions

Vampirism Iron's Spells Compatibility 1.20.1-0.0.9release
MC 1.20.1forge
July 28, 2026
Vampirism Iron's Spells Compatibility 1.21.1-0.0.9release
MC 1.21.1neoforge
July 28, 2026
Vampirism Iron's Spells Compatibility 1.21.1-0.0.6release
MC 1.21.1neoforge
September 19, 2025

How to Install Vampirism Iron's Spells Compatibility on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Vampirism Iron's Spells Compatibility". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.1, 1.20.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Vampirism Iron's Spells Compatibility server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Vampirism Iron's Spells Compatibility compatible with forge and neoforge?

Vampirism Iron's Spells Compatibility officially supports forge, neoforge for Minecraft 1.21.1, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Vampirism Iron's Spells Compatibility – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Vampirism Iron's Spells Compatibility consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

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Recommended RAM
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Details

License
MIT License
Server-side
Required

Supported Versions

1.21.11.20.1