Cast Your First Astronomical Spell and See the Lighting Effects

Equip and Cast a Spell

Astronomical spells in this mod are legendary-tier spells added to Iron's Spells 'n Spellbooks. Obtain one through normal spell acquisition (loot, crafting, or commands depending on your setup), then equip it in your spell book or casting interface.

Cast the spell by using your bound hotkey or spell-casting mechanic. You'll immediately see colored light bloom across nearby blocks in real-time—the light color matches the spell's theme (purple for certain cosmic effects, white for stellar spells, golden for solar magic, etc.).

Observe the Lighting and Shadows

The mod renders point lights without requiring shader packs. Look around the spell impact zone: blocks are illuminated with colored light that spreads naturally across terrain. Shadows cast by blocks, fences, and structures will appear soft and realistic.

If you have Iris or Oculus shaders installed, the lighting integrates seamlessly without conflicts. The ray-traced shadows work in a 64×64×64 block volume around your camera, so distant terrain won't show shadow detail, but nearby structures will cast accurate soft shadows.

Try casting near villages or complex structures to see how light penetrates gaps in fences and iron bars, creating matching shadow patterns.