Sync stone ultimate

This article is incomplete.
Please feel free to edit this article to add missing information and complete it.
Reason: Needs more detail about properties, missing names in other languages

Bag sprite of a Mysterious Stone

A sync stone ultimate, also known as a mysterious stone, is a special type of stone in Pokémon Masters EX. As the name implies, sync stones ultimate are similar to sync stones, containing energy that is powered by the bond between a Trainer and their Pokémon. They seem to have a connection to the Mythical Pokémon Arceus.

In the games

Sync stones ultimate are black stones with a crack on the surface, revealing a rainbow light. The first sync stone ultimate was found by Rei at the end of Together in an Unknown Land, and more are found by sync pairs across Pasio during the Mysterious Stones Chapter. They can be found in any environment, such as towns and forests. Professor Bellis is researching them.

Availability

Mysterious Stones can be received as completion rewards from battles in the training area, as well as the Daily Region Rotation. There is also a rare chance of finding Mysterious Stones on a Trainer Lodge expedition.

Uses

Collecting certain amounts of Mysterious Stones is required to unlock story areas in the Mysterious Stones Chapter. Mysterious Stones can also be exchanged in the shop for rare items. These exchanges reset monthly. A total of 90 Mysterious Stones are needed to obtain all the limited items each month.

Item given		Item received	Max exchanges
Mysterious Stones ×10	→	Move Candy Coin ×1	1
Mysterious Stones ×10	→	Strike Move Candy Coin ×1	1
Mysterious Stones ×10	→	Tech Move Candy Coin ×1	1
Mysterious Stones ×10	→	Support Move Candy Coin ×1	1
Mysterious Stones ×10	→	Sprint Move Candy Coin ×1	1
Mysterious Stones ×10	→	Field Move Candy Coin ×1	1
Mysterious Stones ×10	→	5★ Power-Up ×1	2
Mysterious Stones ×5	→	Certificate of Excellence ×2	4
Mysterious Stones ×10	→	Yellow Skill Feather ×1	Unlimited
Mysterious Stones ×1	→	Coins ×1,000	Unlimited