Box Legendary cloning (Generation IX)

Box Legendary cloning is a glitch in Pokémon Scarlet and Violet that allows the player to have two copies of the Box Legendary, Koraidon or Miraidon, in their game, one in battle form and one in ride form. This is a glitched game state, which can be exploited for item duplication.

Faster item cloning

Requirements

• Ability to move legendary to Party (Post-game)
• 5 Pokémon already in the Party
• Item to be cloned in Bag
• Send to Boxes set to Manual in Options

Optional

• In Options, Skip Move Learning set to On, Give Nicknames set to Off, and Autosave set to Off in Options
• Be at a location with an easy to catch Pokémon

Procedure

1. Bring up the Main Menu screen by pressing the X button.
   
2. Scroll to the Box Legendary (either Koraidon or Miraidon) at the bottom-left of the Main Menu screen.
   
3. Press A to get a prompt to switch Koraidon/Miraidon to its battle form and press A again to confirm. This will put Koraidon/Miraidon into the last slot of the party.
   
4. Give Koraidon/Miraidon an item to hold from either the Bag or from another Pokémon in the party or Pokémon Storage Boxes.
   
5. Next, press the + Button twice in the overworld. The first press will switch Koraidon/Miraidon into its riding form and the second will cause the player to get off the Pokémon.
   
6. Again, bring up the Main Menu screen, scroll to the Box Legendary, and switch it back to its battle form.
   
7. Next, find a wild Pokémon without getting back on Koraidon/Miraidon.
   
8. Get into battle with the wild Pokémon and catch it.
   
9. When given the option to regarding your just caught Pokémon, select Add to your party.
   
10. Scroll down to the Koraidon/Miraidon in your party.
    
11. Press both the A & B Buttons at the same time.
    • If done incorrectly, the message "You can't send (Koraidon/Miraidon) to your boxes." will appear. Try the previous step again in this situation.
      
    • If done correctly, the message "(Koraidon/Miraidon) has a(n) [item]. What would you like to do?" will appear. Select the Place the item in your Bag option.
      
12. The item will be sent to the bag and the caught Pokémon will be added to your party. Koraidon or Miraidon will be sent to the boxes.
    
13. Next, press the + Button twice again in the overworld. The first press will cause the player to begin riding their Koraidon or Miraidon again, despite it being in the box. The second press will cause the player to dismount again.
    
14. Open the Main Menu and go into the boxes.
    
15. Locate the Koraidon or Miraidon and move it back into your party.
    
16. Return to the Main Menu.
    • With everything done correctly to this point, there will be two Koraidon or two Miraidon. One will be in the party in battle form and one will be below it in ride form.
      
17. Select the battle form Koraidon/Miraidon in the party.
    
18. Select the Give an item to hold option.
    
19. Pick the item to be cloned and give it to the Pokémon.
    

Loop

1. With the battle form Koraidon/Miraidon holding an item, select the battle form Koraidon/Miraidon in the party again.
   
2. This time, select the Return to ride form option and confirm the following prompt.
   • If done correctly, the message "(Koraidon/Miraidon) is ready to travel!" will appear.
     
3. Go to the Main Menu and return to the boxes.
   
4. Press the X button twice to enter the Battle Teams function.
   
5. Go to the box prior to Box 1 by using the L and R buttons. This box will be named either Koraidon or Miraidon and is used to register Koraidon/Miraidon for use in modes that require Battle Teams.
   
6. Select the Koraidon/Miraidon in slot 1 of this box.
   
7. Select Put away held item from the menu to return the item to the Bag. This will clone the item.
   
8. Return to the Main Menu screen.
   • At this point, you can start again from the first step in this loop section to continue duplicating items. The player may also change out the item being held by the battle form Koraidon or Miraidon in the party to duplicate a different item.
     

How it works

The game does not intend for either Koraidon or Miraidon to enter the boxes. Once it does so, the game unintentionally can be forced to have two Koraidon or two Miraidon to appear in the Main Menu in two different forms; one in battle form and one in ride form. This allows the player unintended access to cloning and item duplication through these two Koraidon or two Miraidon.

External links

Faster item cloning

YouTube video by DrWater

YouTube video by Kibbles - (Video Game DataBank)