You can activate this cheat if you have witch of black forest, monster reborn, sangan, magician of faith, and mystic tomato in your hand. First, you need to play witch of the black forest, let it die and choose a part of exodia. Second, play monster reborn to restore witch of the black forest and let it die to get another part. Then, play magician of faith to get monster reborn, then to get witch of black forest, let it die to get another piece. finally play with sangan and mystical tomato, let them die to get exodia and blast 'em all!