Edited ROMs can only be played on exploited consoles.
Please do not ask (nor private message me) how to obtain/dump/decrypt/unpack/repack ROMs as that is unrelated to the functionality of this program.
Download Link At Bottom of Post
pk3DS is a ROM editor for 3DS games with tools from various contributors.
All editors displayed are fully functional.
Simply feed it a folder (drag/drop or by File->Open) which contains the game romfs & exefs extracted content folders.
http://i.imgur.com/iEsoudA.png
Randomizers available:
Trainer Battles (Pokemon / Items / Moves / Abilities / Difficulty / Classes)
Wild Encounters (Species, Level, Gen/Legend Specific, ORAS DexNav won't crash!)
Personal Data (Pokemon Types / Stats / Abilities / TM Learnset)
Move Randomizer (Type / Damage Category)
Move Learnset (Level Up / Egg Move)
Evolutions
TM Moves
Special Mart Inventory
etc
Download the latest version here (click on latest run at the top, then click Artifacts (Published), and download the 'drop' folder)
Example:
Click on the most recent one (typically the link on top) [you can check the dates on the right, to determine which is the most recent one]
You'll then be brought to this page. Click on where I circled portion, for that page.
Then go ahead and download it (the circled portion on that page)
Source code is available on my GitHub.