keystone_expansion_pufferfish_skills.jar is a release file of the Minecraft mod Keystone Expansion Pufferfish's Skills for Fabric, Forge, NeoForge, made for Minecraft 1.21.3. It was published on December 28, 2025 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Keystone Expansion Pufferfish's Skills mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.