Instructions
Clone a Pokemon
Take the player character to the battle tower, and log on to the player character's personal PC.
Deposit the Pokemon to clone in Box 9 of the storage system.
Have the character exit the PC, then press start to enter the main menu and save the game.
Withdraw the Pokemon out of box 9, and walk to the female character to the right and initiate dialogue to start an open level battle.
Select two Pokemon for the battle, making sure not to select the Pokemon to be cloned.
Manually shut off the game during the pause that occurs before a dialogue box appears to say that the game is being saved.
Restart the game. The original Pokemon will be in the player character's party, and the clone will be in Box 9 in the PC storage system.
Lottery Exploit
Go to the lottery counter in the town of Lilycove. Save the game and wait until the end of a day to restart the game.
Play the lottery and see if any of the Pokemon's trainer ID matches the lottery numbers. If none of the numbers match, restart the game without saving, then play the lottery again.
Repeat until one of the lottery numbers matches. If any of the player's trainer ID matches the number one the lottery, the player wins a prize, such as a master ball or maximum revive.
Berry Master's Wife
Visit the Berry Master's wife, located in the east of Mauville city, to obtain berries.
Tell the Berry Master's wife "COOL LATIOS" to obtain a Durin berry, "OVERWHELMING LATIOS" for a Watmel berry, "CHALLENGE CONTEST" for a Pamtre berry, "GREAT BATTLE" for a Spelon berry, and "SUPER HUSTLE" for a Belue battle. .
Visit the Berry Master's wife one per day to obtain different berries, as she will only give the player one berry a day.