Muah Royal Treasury

After getting the Silvalant Emblem, travel to Portmith and head to the castle to meet with the king. However, before the minister takes you to the King, he will ask your party to clear the monsters in their royal treasury. You’ll be taken to the Treasury automatically afterward.

Luxurious Weapons

While exploring this dungeon, you’ll come across powerful “Luxurious” weapons and Equipment from the chests but you can only use them while you’re inside the treasury. Once you complete your mission here, all the Luxurious items will be taken back by the minister. It’s better to have party members with high level Customize Specialty for Swords. Roddick, Ashlay, Cyuss and Phia can customize swords.

Here are some of the combinations you can try:

Weapon	Combination	Character
Dueling Sword (1200 ATK)	Luxurious Sword + Damascus	Roddick
Blade of Doom (1400 ATK, Dark)	Luxurious Sword + Mithril	Cyuss
Dueling Sword (1200 ATK)	Luxurious Sword + Rainbow Diamond	Ashlay
Ice Blades (650 ATK, Water)	Luxurious Sword + Mithril	Phia

There are no fixed combinations using Luxurious Rods but you can still get high level weapons if you Customize them with high-grade materials. Ioshua, Millie and Erys can customize Rods.

B1F: There’s only one corridor here so check the rooms along the way to get Luxurious Sword, Luxurious Rod, and Luxurious Robe. Enter the last door then take the stairs down.

B2F: There’s still one corridor on this floor so check the rooms again individually to get a Medicine Bottle, Feline SFT (for Pericci), and Luxurious Armor. Continue downstairs next.

B3F: There are three paths on this floor. Follow the central path down and enter the room at the end. Obtain the Bagua SFT (for Ilia and T’nique) from the chest.

Backtrack to the intersection and take the eastern path this time. Grab the Resurrection Elixir from the first door to the left, Luxurious Sword and Luxurious Rod in the following room, and Luxurious Armor in the last room.

Return to the intersection and finally go left this time. Grab the Luxurious Robe from the first room and Medicine Bottle in the last room. Take the stairs down afterward.

B4F: Finally, use the savepoint and prep your party for a boss fight. Once ready, enter the next room to encounter the boss.

BOSS: SUCCUBUS, Shadow Beast x7

The Shadow Beasts are quite dangerous if you allow them to gang up on your fighters. They're fast and will always attempt to flank and surround your units. Keep them away from your spellcasters and make sure to spread out as well.

Have your spellcasters cast offensive Spells in split second intervals and watch your allies’ HP. It will also help if your fighters have AoE arts. If you have produced some recovery cards or statues using the Art Specialties, they will come in handy here, especially if your casters are busy laying waste on the enemies. Once you have taken care of the minions, gang up on the Succubus to end the battle.

After defeating the boss, check out the next room to get a ?Jewelry (Ring of Mental Power) from the chest. Head back to the exit afterward.