Asterism Arcanum | Addon for Iron's Spells and Spellbooks

Asterism Arcanum is an addon introducing the Astral School of magic to Iron's Spells and Spellbooks.

File Details

asterismarcanum-1.21.1-0.1.0.jar

  • R
  • May 28, 2026
  • 964.11 KB
  • 1.0K
  • 1.21.1
  • NeoForge

File Name

asterismarcanum-1.21.1-0.1.0.jar

Supported Versions

  • 1.21.1

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Asterism Arcanum Version 0.1.0

IMPORTANT INFORMATION FOR UPDATING VERSIONS

The previous version of the addon is NOT able to be updated to this new version- please see the FAQ as to why. The next update will not have this issue.

As such, it is essential that you BACK UP YOUR WORLD if you do want to update. If you would like to manually replace lost items, I have provided a guide for doing so.

Content:

  • Mobs
    • Astromancer - school specific mage npc which spawns in the Astral Observatory
    • Dragonfly - hostile mob which is used to create astral spells, and which spawns in the Astral Observatory
    • Lunar Moth - passive mob which rarely spawns on top of mountains, but can also be spawned by throwing mothspawn, or by summoning it as a mount.
  • Structure
    • Astral Observatory - new structure that generates an Astromancer, as well as frequently generating with Dragonfly spawners.
  • Items
    • Astral Armor - generic armor set for the astral school of magic.
    • Celestial Staff - stave for the astral school of magic.
    • Astrolabe Spellbook - although it is not visually a spellbook, this item still functions as a spellbook and provides astral spell power.
    • Mothspawn - an item which is dug up by sniffer mobs, which can be thrown as a weapon or thrown to spawn Lunar Moths.
    • Lumine and Umbral lumine - two new block sets which can be crafted as well as found in the Astral Observatory.
    • Dragonfly Comb - a new decorative block found around Dragonfly spawners.
  • Spells
    • Astral Echo - a teleportation spell that leaves behind a ball of light, if the ball is counterspelled, the teleportation spell is reversed.
    • Brightburst - a spell that pushes away and damages close-by entities.
    • Celestial Tether - a spell that locks you in place and nullifies incoming damage.
    • Luminous Beam - a modification of the cone spells seen in Iron's Spells n' Spellbooks, this spell is a long and skinny beam of light.
    • Piercing Light - this spell creates dozens of small projectiles which fly out away from you and may damage nearby entities.
    • Silvery Barbs - this spell can be cast on pets, summons, or allies when they are about to take damage, in order to potentially prevent that damage.
    • Starcutter - this spell creates a ball of light which quicky explodes, dealing damage.
    • Starfire - this is a basic missile spell which launches a ball of light that can pierce and ricochet through enemies.
    • Star Swarm - this spell repeatedly summons barrages of projectiles which fly towards where the caster aims.
    • Summon Lunar Moth - this spell summons a large Lunar Moth which can be ridden and will attempt to protect the summoner.
  • Unfinished/Creative Features
    • Astral Sea (dimension) - This is an unfinished dimension which will have content in the next update to the addon. It cannot be accessed in survival.
    • Astral Gateway (spell) - This is a spell that is used to access the Astral Sea, it cannot be accessed in survival.
    • Ethereal Talisman (item) - This is an item that comes imbued with the Astral Gateway spell, it cannot be accessed in survival.