|1||Battle Maison’s Exchange Service Corner – 32 BP||Yes|
You can only get a Dubious Disc at the Battle Maison’s Exchange Service Corner in Omega Ruby & Alpha Sapphire.
At the Battle Maison you can exchange 32 Battle Points (BP) per Dubious Disc, and you can get an unlimited number of copies this way.
The Battle Maison is located at the Battle Resort, which is an island that only becomes accessible in the post-game after completing the Delta Episode.
Getting Dubious Discs (Step-by-Step)
The Battle Maison operates similarly to the Battle Tower from previous generations. Winning battles in this battle facility rewards you with BP, which can be exchanged for a variety of items at the Exchange Service Corner.
If you don’t know where the Battle Maison is then just head over to the Battle Resort’s Pokémon Center to get started.
Step 1: From the Battle Resort’s Pokémon Center, proceed slightly east and then head up the staircase at the nearby intersection.
Step 2: After going up the stairs, just keep going north and enter the Battle Maison. It’ll be the yellow building with brown front doors.
Step 3: Once you’re inside, you’ll see two staircases going upstairs. Head up the left one.
Step 4: On the second floor you’ll find one of the Exchange Service Corner’s attendants.
If you’ve got at least 32 BP then you can purchase a Dubious Disc from her.
In the Exchange Service Corner, two attendants offer a wide variety of valuable items in exchange for BP.
The right attendant sells held items used in battles.
The left attendant sells Vitamins, EV training items, and evolution items, including the Dubious Disc.
Here’s a complete list of items offered as prizes by the attendant on the left:
|HP Up||2 BP||Power Anklet||16 BP|
|Protein||2 BP||Protector||32 BP|
|Iron||2 BP||Up-Grade||32 BP|
|Calcium||2 BP||Dubious Disc||32 BP|
|Zinc||2 BP||Electirizer||32 BP|
|Carbos||2 BP||Magmarizer||32 BP|
|Power Weight||16 BP||Reaper Cloth||32 BP|
|Power Bracer||16 BP||Whipped Dream||32 BP|
|Power Belt||16 BP||Sachet||32 BP|
|Power Lens||16 BP||Rare Candy||48 BP|
|Power Band||16 BP||Ability Capsule||200 BP|
Earning BP (Quick Guide)
To accumulate BP, you’ll have to take on the trainers in this battle facility.
The various battle challenges here serve as the primary means of earning BP in the game.
Just beyond the curtains between the two Exchange Service Corners, you’ll find the arena where the battles will take place.
Speak to the receptionist right next to the PC to start the challenge. You’ll want to assemble your most formidable team first though – then you can select your preferred battle format from the following options:
|Battle Format||Number of Eligible Pokémon||Description|
|Single Battle||3||A one-on-one battle.|
|Double Battle||4||A two-on-two battle.|
|Triple Battle||6||A three-on-three battle.|
|Rotation Battle||4||A three-on-three battle, with only one Pokémon fighting at a time. You can rotate between them during the battle.|
|Multi Battle||2 per player (4 total)||You team up with another Trainer and fight in a two-on-two format.|
With each victory, you’re awarded BP. And longer win streaks give you even more BP.
When you defeat the Battle Chatelaine on the 20th battle in the Normal Rank, you unlock the Super Rank for that battle format.
The Super Rank offers a tougher challenge, notably featuring a rematch with a Battle Chatelaine on the 50th match.
Check out the table below to see how much BP you can earn per victory:
|Win Streak||Normal Rank||Super Rank|
|20 (Battle Chatelaine)||20||3|
|50 (Battle Chatelaine)||–||50|
Just note that losing a battle will break your streak, forcing you to start a new challenge to keep earning more BP.
Since levels are set to 50 and you can’t use healing items, a solid strategy and fully trained Pokémon are crucial for success in the Battle Maison.
How the Dubious Disc Works
The Dubious Disc, a held item classified as an Evolution Item, has no effect in battle.
But it’s a unique item specifically designed for Porygon2’s evolution when it’s held during a trade.
When a Porygon2 holding a Dubious Disc is traded to another player, it will evolve into Porygon-Z. Once the trade is complete and the evolution happens, then the held Dubious Disc is consumed and disappears.
If you don’t have a Porygon2 yet, but you do have a Porygon, then you might be wondering how to evolve it.
For that you’ll need an item called the Up-Grade, which can also be obtained for 32 BP from the Battle Maison.