OK...you will need to do this very fast-leave your main party at the switch point in front of the fountain, and take your other party to the cord. Make sure to have the "encounters-none" ability; this way you won't have any delays, and you only have to swith the abilities and fill HP of that character. Oh, by the way, the cord summons OMEGA WEAPON who is the toughest creature you will ever face. Make sure you have plenty of invincibilty items and aura magic, but remember, you can only cast aura on someone who is not invincible!! Also, make sure one character has the revive ability, and one has the recover ability. After your party pulls the cord, run to the nearest switch point and switch parties, the quickly change the abilities back to your main character. Go around the fountain and through the large double doors and run into the big black "fog".