Magic Circles - ISAS Addon
by NoEndMan
Magic Circles - ISAS Addon draws a magic circle under casters when Iron's Spells 'n Spellbooks spells are cast, so the magic is visible in the world.
What it does
The addon requires Iron's Spells 'n Spellbooks as a dependency, and the newer releases of this mod need a matching release of that mod. Older releases of the addon work with older versions of Iron's Spells 'n Spellbooks. Each cast produces a circle drawn on the ground beneath the caster, with the size, color and placement chosen from the spell being used.
The circle size depends on the cast time. A spell with a longer cast time produces a larger circle, and a spell that casts instantly shows a smaller one. Colors follow the spell's class, so fire spells appear orange, ice spells light blue and abyss spells dark purple. The position of the circle also changes with the variant that is selected.
Only clients that have the mod installed can see the circles, so the addon is client-side only and servers do not need it. Later releases add support for most Oculus shaders, and the author reports testing with Essential on multiplayer worlds and servers. The license is the GNU Affero General Public License v3.0 only, and the project is not open source.
Key features
Cast-time circle sizes
Several circle variants exist in different sizes, and the variant is picked from how long the spell takes to cast.
Spell class colors
The circle's color follows the spell class, with orange for fire, light blue for ice and dark purple for abyss spells.
Placement by variant
The position of the circle under the caster is set by the variant selected for each spell.
Shader support
Later releases add support for most Oculus shaders, so the circles render with common shader packs.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Players who use Iron's Spells 'n Spellbooks and want spell casts to show a visible circle, and players who use shader packs supported by the addon.
How it compares
Osmium's Magic is a Forge mod for 1.20.1 that runs on client and server, and it is not open source under All rights reserved. Ethernano also runs on client and server, with Forge files for 1.20.1 – 1.20.6 and All rights reserved licensing. MagicTP is open source under the MIT License and works on Forge for 1.20.1, and it works on either side, and neither needs it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Magic Circles - ISAS Addon | Forge | 1.20.1 | Client-side only | 2026-06-10 |
| Osmium's Magic | Forge | 1.20.1 | Client and server | 2026-04-20 |
| Ethernano | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-03-15 |
| MagicTP | Forge | 1.20.1 | Client or server, optional | 2025-04-10 |
Questions
Does Magic Circles - ISAS Addon need Iron's Spells 'n Spellbooks?
Do servers need to install the addon?
Which loader and version does the addon support?
In the catalog
Magic Circles - ISAS Addon is one of 5,392 Social mods on ModsFinder, and one of 1,817 Social mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from NoEndMan
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What the author says
Did you heard about Iron's Spells 'n Spellbooks? Did you have moments you saw players, mobs, casting powerfull spells but... something was FEELING missing? Well this mod just might gives you the answer! Also important to mention: From version 1.1.0, the mod requires the use of Iron's Spells 'n Spellbooks mod of…
Official listing
- Modrinth page
- modrinth.com/mod/magic-circles-isas-addon
- Owner
- NoEndMan
- Published
- 2025-11-21
- Updated on Modrinth
- 2026-06-10
- Facts verified
- 2026-10-15