This mod by significantly upgrades the core Power of Chaos experience with:
Most mod installers include a folder named All Cards - UNLOCKER . yu-gi-oh power of chaos the legend reborn all cards unlocker
If cards remain locked, you may need to open Regedit and update the CommonDir path under HKEY_LOCAL_MACHINE\SOFTWARE\KONAMI\Yu-Gi-Oh! Power Of Chaos\System to point exactly where your system.dat is located. This mod by significantly upgrades the core Power
Always run the game as an administrator to ensure it can read the unlocked save data. What the Legend Reborn Mod Includes yu-gi-oh power of chaos the legend reborn all cards unlocker