This command setting Ender Dragon spawner on your coordinates
Note: Minify the command to avoid issues :)
Give me the best Sword
(/setblock) Ender Dragon mob spawner
Give me chest with 64 netherite blocks
Give me Herobrine Head
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)