Here's why:
* Master Balls are extremely rare. They are not obtainable through regular gameplay in Pokémon Diamond. You can only get them in very specific ways:
* Event Distribution: Some Master Balls were distributed as part of special events. These events are usually time-limited and are not available anymore.
* Cheating: Master Balls can be obtained through hacking or other exploits, but this is against the spirit of the game and may potentially harm your save file.
How to get rare Poke Balls in Pokémon Diamond:
* Catch 'Em All: Some rare Poke Balls, like the Ultra Ball, can be found by completing the Pokédex and reaching specific milestones.
* Trading: You can trade with other players to obtain rare Poke Balls.
* Contest Winning: Certain Poke Balls can be won as prizes for participating in Contests.
Remember to play fair and enjoy the game as intended. Good luck with your catching!