Hello everybody!I am kinda new to the forum but played the game since Day 1.I shall show how to master this dungeon.Its an elite dungeon with difficulty of 113. Record Materia: 1.Vivi=Mana Spring II 2.Sazh=Double Hit 3.Sephiroth=Dragoon Determination 4.Rydia=Summon Spring II 5.Seplhie=Concentration II Gear and ability setup below: What went on the battle? Cast Haste on Vivi and then everybody else as killing the Crystals when they are low HP is ESSENTIAL!(They each did 600 to me but thats gonna overwhelmed me).Save all the AOE abilties(Quake and Valefor) for the boss and start buffing before them.Also Black Magic 3* for Sephiroth ain't useless as he can blind Crystal(Lower).This crystal absorbs Earth so it will(when not critical) use Attack or Critical(Buff Attack). Why fight for Red XII's MC? You see his 1st RM(photo below) is usefull for a certain RECOLLECTION...its usefull to REFLECT a way to STOP a certain OMEGA fish oil as it may REFLECT back ideas... Boss Info: All Crstals will start out with Attack and Critical. When they(Upper,Left,Right)are weak, they will use AOE spells of their respective element(Aeroga,Firaga and Aqua Breath)! The bottom Crystal can only do Attack and Critical. P.S Feel free to post other ways to master this as we are different from equips/chracters.