DeNA has announced that the Legendary Arena Latios and the Lisia and Glacia Spotlight Scout will take place from July 26th, 2021 at 11:00 p.m. until August 9th, 2021 at 10:59 p.m. in Pokémon Masters EX.

Legendary Arena Latios

Legendary Arena: Latios is back! Starting today, Legendary Arena: Latios returns! New Event Missions have been added along with its return! You can complete higher difficulty missions to get Gems!

Date/Time

July 26, 2021 at 11:00 p.m. - August 9, 2021 at 10:59 p.m.

Legendary Arena

The Legendary Arena is a special battle area where you can form multiple teams and take on the challenge using a set number of sync pairs. You can complete the related missions to earn Medals that can only be obtained here!

Important

• To attempt Legendary Arena missions, you must have completed Main Story Chapter 2: Defeat Team Break! (Normal) in single-player.
• Your area info and mission completion data will be saved at the event’s conclusion and will be used the next time this event returns.
• While Legendary Arena missions will also be displayed on the General missions screen, they cannot be attempted outside of the challenge period.
• The event missions held at the same time as the Legendary Arena do not count toward the completion requirements for Legendary Arena Mission Completion Rewards.
• All completion rewards for event missions held at the same time as the Legendary Arena must be claimed within three days of the mission period ending.
• The time period and featured content are subject to change without notice.

Source: https://pokemonmasters-game.com/en-US/announcements/Event_3060_4W_5

Lisia and Glacia Spotlight Scout

Increased chance to scout Lisia and Glacia! Lisia and Glacia Spotlight Scout under way! Featuring 5★ Lisia & Altaria and 5★ Glacia & Glalie! In this sync pair scout, you can use the daily discount for only 100 paid gems per scout up to 3 times per day. You can also receive up to 15 Custom ★ Power-Ups for both 5★ Lisia & Altaria and 5★ Glacia & Glalie depending on how many times you scout them using this sync pair scout!

About Lisia & Altaria

Hoenn’s own contest idol! She clears away field effects with Defog to give her team the upper hand!

About Glacia & Glalie

This member of the Hoenn Elite Four defends her allies by drawing the attention of her opponents!

Sync Pair Scout + Present!

Receive the following items as presents according to the number of times you obtain 5★ Lisia & Altaria and 5★ Glacia & Glalie from this sync pair scout!

1 Time(s)

• Acquired sync pair's Custom ★ Power-Up ×3

2 Time(s)

• Acquired sync pair's Custom ★ Power-Up ×3

3 Time(s)

• Acquired sync pair's Custom ★ Power-Up ×3

4 Time(s)

• Acquired sync pair's Custom ★ Power-Up ×3

5 Time(s)

• Acquired sync pair's Custom ★ Power-Up ×3

Date/Time

July 26, 2021 at 11:00 p.m. - August 9, 2021 at 10:59 p.m.

Important

• The sync pairs featured in this sync pair scout may also appear in future sync pair scouts.
• Sync pairs other than the ones mentioned above may appear as well.
• To unlock the sync grid, you must have completed Main Story Chapter 2: A Friendly New Rival (Normal) in single-player.
• You will not receive the presents if you obtain 5★ Lisia & Altaria and 5★ Glacia & Glalie outside of the scout period.
• The applicable presents will be sent to you upon obtaining 5★ Lisia & Altaria or 5★ Glacia & Glalie during the scout period.
• You will not receive any additional presents if you obtain 5★ Lisia & Altaria and 5★ Glacia & Glalie from this sync pair scout more than the specified number of times during the scout period. Note: Presents will be sent to the Temp Storage section of the Present Box.
• Please note that you cannot have two or more sync pairs that include Trainers with the same name in your team.
• Featured sync pairs have a higher chance of appearing than non-featured 5★ sync pairs.
• The number of times the daily discount (100 paid Gems per scout) can be used is reset each day. Reset Time: 11:00 p.m.
• To check the available sync pairs and their respective offering rates, go to the Offering Rate section on the Sync Pair Scout screen.
• Please read the Notes section under Offering Rate on the Sync Pair Scout screen before using the feature.
• The time period and featured content are subject to change without notice.

Source: https://pokemonmasters-game.com/en-US/announcements/BSearch_3060_4W_2