v1.21.1-3.16.0 is a release file of the Minecraft mod Iron's Spells 'n Spellbooks for NeoForge, made for Minecraft 1.21.1. It was published on June 5, 2026 and is 13.2 MB in size. For the full description, screenshots and every other version, visit the Iron's Spells 'n Spellbooks mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
