https://www.technicpack.net/modpack/the-herobrine-official.808594
Note: Minify the command to avoid issues :)
Simple Title To beginner
THE OP POTION
boomnukemega
a big Tellraw For Expert and you are beginners you can check
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)