Undead Horse! you can explore the world anytime you want!! No Mods!
Note: Minify the command to avoid issues :)
Charged Creeper (with large exploding radius)
Horse Carrying Chest
Undead Horse
SlimeTornado
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)