4.0.1.0-beta is a release file of the Minecraft data pack Mobs Buffs (MPR), made for Minecraft 1.21.1. It was published on March 3, 2026 and is 0 MB in size. For the full description, screenshots and every other version, visit the Mobs Buffs (MPR) data pack page.
How to install: Put the .zip into the datapacks folder of your world (.minecraft/saves/<world>/datapacks) and run /reload. No mods needed.
