Bronze Dice and Muttering Tiara are Monad Passage bosses in Persona 3 Reload. Read on to learn how to beat these two bosses, know their location, weaknesses and resistances, as well as the recommended party setup for defeating them.
Use Sylphid Aura Before Battle
Sylphid Aura is Fuuka’s navigational skill that buffs your party. Make sure to use it before engaging with this boss, as Muttering Tiara can heavily debilitate you with its debuffs.
Insta-Kill Muttering Tiara with Mudoon
Muttering Tiara is weak to Dark magic so cast Mudo, or better yet, Mudoon to instantly kill Muttering Tiara before it even has a chance to do anything. If you don’t have these skills, Eiha or Eiga will do well enough to knock it down for All-Out Attacks.

Cast Tarunda on Bronze Dice
Bronze Dice is the damage dealer in this boss fight, while Muttering Tiara casts debuffs on your party. Use Tarunda on Bronze Dice to lessen its attack power, especially since it casts powerful multi-target skills.
Use Numbers to Predict Its Moves
Bronze Dice shows a die number that corresponds to its next attack. Keep an eye on the number it shows to anticipate whatever it will cast next.
Protect Against Dark
Having a few Homunculus items on hand will be extremely helpful to stay alive from Bronze Dice’s Mamudoon skill, which has a chance to instakill your whole party with Dark magic. If you’re all out of Homunculus, having Band-Ace and Revival Bead items handy will also be helpful, as well as the skill Recarm.
Having Koromaru in your party is ideal, since he nullifies Dark magic. Equip Personas that block Dark Magic so the Protagonist will be safe from death.
Protect Against Fire
Bronze Dice casts Maragion, so keep Mitsuru out of this battle and make sure to include Junpei and Koromaru since they are strong against Fire. Equip a Persona that is also resistant to or nullifies Fire.

Use Dekunda to Remove Debuffs
Muttering Tiara casts Masukunda and Matarunda, which lowers your party’s accuracy/evasion and attack damage, which is very debilitating. Cancel this out with the Dekunda skill or a Dekunda Gem.
Use Therugy Skills for Massive Damage
Bronze Dice is a bit high in defense, so keep on using your Theurgy skills to get its HP down quick, before it’s able to cast more Mamudoon attacks.

