If you are really an experienced player and bosses for you have already become boring, try to install this modification, thanks to it, with each death Bosses will become stronger, they will have more life and during the battle next to them will appear assistants that prevent you from attacking the goal.
How to install Progressive Bosses Mod
- Download and install Minecraft Forge
- Download mod
- Do not unzip it, copy to C:\Users\User_Name\AppData\ Roaming\.minecraft\mods