My Pack 1.0.0.jar is a release file of the Minecraft mod The Old One Origin - Origins Add on for Fabric, made for Minecraft 1.21.1. It was published on June 18, 2025 and is 0 MB in size. For the full description, screenshots and every other version, visit the The Old One Origin - Origins Add on mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.