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The Battle Maison is for advanced players wishing to hone their battling skills.

The Battle Maison is a facility similar to the Battle Towers and the Battle Subways from the previous games. The premise of playing here is to get a very long battling streak against trainers: using only one team, no items from the bag, and with healings between each battle, you need to get as far as possible.

In doing so, you earn BP to exchange for numerous valuable items. This is much harder than it sounds! The facility itself is found in Kiloude City after beating the game: it is the gold mansion in the center of the town. If you go further within to the battling area, you can speak with the receptionist to begin battle.

Like in the past, there are a number of restrictions, also shared by Lumiose’s Battle Institute.

• Flat Battles: All battles will be Flat Battles. That is to say, Pokémon not at Level 50 are made to be Level 50: stats and EV growths will be adjusted appropriately. (Moves remain unchanged.)
• Legendary Pokémon: Most mainstream Legendary Pokémon are not allowed: this means you cannot use Mew, Mewtwo, Ho-oh, Lugia, Celebi, Kyogre, Groudon, Rayquaza, Jirachi, Deoxys, Dialga, Palkia, Giratina, Darkrai, Phione, Manaphy, Shaymin, Arceus, Victini, Reshiram, Zekrom, Kyurem, Meloetta, Genesect, Xerneas, Yveltal, and Zygarde.
• Pseudo-Legendaries: These Pokémon are allowed, per tradition: this means Articuno, Moltres, Zapdos, Entei, Suicune, Raikou, Latias, Latios, Regice, Regirock, Registeel, Rotom, Mesprit, Uxie, Azelf, Regigigas, Cresselia, Heatran, Cobalion, Terrakion, Virizion, Thundurus, Tornadus, Landorus, and Keldeo are allowed to battle.
• Duplication: Hold items (beyond having no items) and Pokémon species may not be repeated.
• Quantities: For Single Battles, you need three Pokémon; for Double and Rotation, you need four; and for Triple, you need six. If you use Multi Battles (you and someone against two others; the other may be human or AI), you only need two, but the battle format will be Double Battle.

After each battle win, you’ll earn some BP (Battle Points) . BP is used to buy items at the exchange in the entrance of the Maison. The BP earned will increase significantly as time goes on.

For the most part, Trainers in the Battle Maison are completely random, except at the 20- and 50-win marks, at which point you’ll battle an unique trainer according to the battle rules. Due to this chaotic nature, you will definitely want to construct a team well-fitted to fight any type of Pokémon.

Pokémon with huge move varieties, such as Lapras or Blaziken or Lucario or Charizard or Noivern or Dragonite, will be absolutely key to your survival. Hopefully you’ve gathered enough TMs and HMs throughout the Kalos region to modify some Pokémon to your needs.

During your challenge, you are allowed to interrupt it or save. Interrupting your challenge, unlike previous generations, is okay. Now you can take breaks to do Wi-Fi battles or whatever. It’s a notable feature to series veterans … and a welcome one! Your streak will end, however, if you lose a battle or opt to change battle types.

BP Exchange (Left Lady)¶

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The lady on the left sells items that improve your Pokemon’s performance.

Item Name	Cost	Effect
Choice Specs	48BP	Raises Special Attack, but only allows one move to be used
Dubious Disc	32BP	Evolves Porygon2 into Porygon-Z when held during a trade
Electirizer	32BP	Evolves Electabuzz into Electivire when helding during a trade
Eject Button	32BP	If the holder is attacked, it switches with another Pokémon in your party
Flame Orb	16BP	Burns the holder: best used with moves (i.e. Fling) that make the opponent hold it
Focus Band	48BP	The holder may survive an attack that would otherwise KO it; it will have just 1 HP
Focus Sash	48BP	If at full HP, the holder cannot be KO’ed in one hit - it will survive with at least 1 HP left
HP Up	2BP	Increases HP EVs by 10 (up to 100 HP or 510 overall)
Iron	2BP	Increases Defense EVs by 10 (up to 100 Defense or 510 overall)

Item Name	Cost	Effect
Iron Ball	48BP	Lowers Speed and negates Flying-type and Levitate designations
Life Orb	48BP	The power of moves is increased, but the holder also loses HP with each move
Magmarizer	32BP	Evolves Magmar into Magmortar when held during a trade
Muscle Band	48BP	Increases the power of Physical-class moves
Power Anklet	16BP	Doubles EV growth in Speed while lowering Speed in battle
Power Band	16BP	Doubles EV growth in Special Defense while lowering Speed in battle
Power Belt	16BP	Doubles EV growth in Defense while lowering Speed in battle
Power Bracer	16BP	Doubles EV growth in Attack while lowering Speed in battle
Power Herb	32BP	Lets a move that needs to charge be used immediately, but lowers the user’s Happiness
Power Lens	16BP	Doubles EV growth in Special Attack while lowering Speed in battle

Item Name	Cost	Effect
Power Weight	16BP	Doubles EV growth in Max HP while lowering Speed in battle
Protector	32BP	Evolves Rhydon into Rhyperior when held during a trade
Protein	2BP	Increases Attack EVs by 10 (up to 100 Attack or 510 overall)
Rare Candy	48BP	Causes an instant level-up, if the Pokémon is under Level 100
Razor Claw	48BP	Increases the critical-hit ratio of moves; evolves Sneasel into Weavile if held while leveling-up at night.
Razor Fang	48BP	Makes hit enemies flinch; evolves Gligar into Gliscor if held while leveling-up at night.
Reaper Cloth	32BP	Evolves Dusclops into Dusknoir when held during a trade.
Red Card	32BP	If the holder is hit by an enemy, the foe is removed from battle - this will end wild encounters
Ring Target	32BP	Moves that normally do nothing will now hit - use moves like Fling to give this to the enemy
Sachet	32BP	Evolves Spritzee into Aromatisse when held during a trade

Item Name	Cost	Effect
Safety Goggles	48BP	The holder will not be affected by Hail, Sandstorm, or the various Powders
Scope Lens	48BP	Increases the holder’s critical-hit ratio
Toxic Orb	16BP	Badly Poisons the holder
Up-Grade	32BP	Evolves Porygon into Porygon2 if held during a trade
Weakness Policy	32BP	If the holder is hit super effectively; then its Attack and Special Attack both rise sharply
Whipped Dream	32BP	Evolves Swirlix into Slurpuff if held during a trade
White Herb	32BP	Reverts lowered stats, but lowers Happiness - hold to use automatically
Wide Lens	48BP	Raises the accuracy of moves
Zinc	2BP	Increases Special Defense EVs by 10 (up to 100 Special Defense or 510 overall)
Zoom Lens	48BP	If the holder moves after the Pokémon it wants to hit, its accuracy is boosted

BP Exchange (Right Lady)¶

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The lady on the right sells exclusive TMs.