You can get a command block in your Minecraft Java or Bedrock world using cheats and a special chat command.

How To Be a Superhero in Minecraft using Only One Command! Using this awesome one command creation, you can turn into Ant Man in minecraft and use Ant-Man's powers to make to shrink in size!

Players interested in automating their commands in Minecraft will have to use Command Blocks, but they’ll need to update their settings to add them into the game.

You can teleport almost anywhere in Minecraft using the "/tp" command, but you'll need to enable cheats in your world first.