BeastCore-1.0.jar is an alpha file of the Minecraft plugin BeastLib, made for Minecraft 1.19.3, 1.8.3. It was published on March 2, 2023 and is 0.9 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the BeastLib plugin page.
How to install: Put the .jar into the plugins folder of your Paper, Spigot or Bukkit server and restart the server.