How do you download omega ruby extreme randomizer nuzlocke?

To download Omega Ruby Extreme Randomizer for a Nuzlocke challenge, you'll need to first obtain a ROM of Pokémon Omega Ruby, which requires owning a legal copy of the game. Then, you can find the Extreme Randomizer patch online, usually hosted on fan sites or forums dedicated to Pokémon ROM hacks. Follow the instructions provided with the randomizer to apply the patch to your ROM. Finally, use a compatible emulator to play the game with the randomizer settings.