Effect Manager (Block Any Effect)
by Nickyouni
Effect Manager is a Forge utility for modpack developers and server admins that blocks chosen potion and mob effects from being applied to entities.
What it does
The mod stops specific potion and mob effects from taking hold on entities, no matter whether they come from potions, beacons, commands or other mods. Blocking is absolute, and an entity that already carries a blocked effect has it removed. Effects are listed by ID, including vanilla entries such as minecraft:speed and entries from other mods such as alexsmobs:soul steal, and the list lives in a config file. Players can be targeted alone, monsters alone, animals alone, or everyone, and a dimension whitelist limits blocking to chosen dimensions, for example to make the Nether harsher while leaving other worlds untouched.
Effect Manager is a lightweight mod with many config options. It is licensed under the MIT License and is not open source. It runs on Forge for 1.20.1 only, and either side can run it without the other, so installing it on one side is enough. Config changes apply through the effectmanager reload command in game, without restarting, and a developer debug mode logs each time an effect is blocked or removed.
Key features
Absolute effect blocking
Listed effects are prevented from being applied, whatever their source, and existing instances are stripped from entities.
Entity target filter
Blocking can apply to everyone, only players, or only mobs and animals, so a rule can be narrowed to one group.
Dimension whitelist
Blocking can be limited to specific dimensions while other dimensions keep their effects.
Live config reloading
Edits to the config file take effect after the reload command runs in chat, with no game restart.
Debug logging
A toggle in the config prints detailed console logs each time an effect is blocked or removed, which helps test a balance.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Block Effect is a Forge mod for 1.19 that is open source under the MIT License and runs on client and server. Screenshot Manager is a Fabric and Forge mod for 1.18.2 – 1.20.1 that is client-side only and not open source. Effect Manager covers only Forge 1.20.1, is optional on both sides and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Effect Manager (Block Any Effect) | Forge | 1.20.1 | Client or server, optional | 2026-03-28 |
| Block Effect | Forge | 1.19 | Client and server | 2022-10-11 |
| Screenshot Manager | Fabric and Forge | 1.18.2 – 1.20.1 | Client-side only | 2024-08-02 |
Questions
Does Effect Manager need to be installed on the server?
Can Effect Manager remove an effect that is already active?
How are effects identified in the config?
Do config changes require restarting the game?
In the catalog
Effect Manager (Block Any Effect) is one of 36,990 Utility mods on ModsFinder, and one of 14,575 Utility mods for Forge. 34,764 mods support Minecraft 1.20.1.
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What the author says
Descripción: Are you building a hardcore modpack and want to disable the "Strength" or "Regeneration" effect entirely? Did you install a mod that adds an overpowered or broken potion effect that ruins your server's economy or balance? Effect Manager is the lightweight, highly configurable utility mod you need…
Official listing
- Modrinth page
- modrinth.com/mod/effect-manager-block-any-effect
- Owner
- Nickyouni
- Published
- 2026-03-28
- Updated on Modrinth
- 2026-03-28
- Facts verified
- 2026-10-15