Pokemon Go Battle League - Season 18: Might And Mastery Guide

With Pokemon Go's latest season coming to a close, it's time for a brand-new season of the Go Battle League, the competitive PvP portion of the game. Like past seasons, this season brings important changes and updates to the Go Battle League, with this new season taking place over the course of three months.

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These changes include new cups and competitions, new Go Battle League events, additions and changes to Pokemon attacks, and many more. Below you can find everything you need to know about this season of the Go Battle League.

Updated on March 4, 2025, by Christian Pellegrino: Pokemon Go's eighteenth season has been introduced, titled Might and Mastery. Like with other seasons, this brings a handful of changes to the Go Battle League, the competitive PvP arena of Pokemon Go. Below you can find information about all of these new changes, including a complete season schedule, new rewards, information on special events, and important changes to Pokemon attacks.

Season Schedule

Throughout this season, there will typically be two to three cups available to participate in at all times, rotating out on a weekly basis.

For the most part, one will be a standard cup, including the Great League, Ultra League, and Master League, while another will be a special limited-time cup, placing unique restrictions on the Pokemon that can be used.

The schedule for this season's Go Battle League can be found below, showing which cups will be available each week of the season.

Each of these Cups will begin and end at 1pm PT.

Go Battle League: Might And Mastery Schedule

Date

Cups Available

March 4–March 11

Great League

Willpower Cup: Great League Edition

March 11–March 18

Ultra League

Scroll Cup: Great League Edition

March 18–March 25 (4x Stardust from win rewards)

Master League

Scroll Cup: Great League Edition

March 25–April 1 (4x Stardust from win rewards)

Great League

Ultra League

Master League

April 1–April 8

Great League

Master Premier

April 8–April 15

Ultra League

Spring Cup: Great League Edition

April 15–April 22 (4x Stardust from win rewards)

Master League

Spring Cup: Great League Edition

April 22–April 29 (4x Stardust from win rewards)

Great League

Ultra League

Master League

April 29–May 6

Great League

Great League Remix

May 6–May 13

Ultra League

Great League Remix

May 13–May 20 (4x Stardust from win rewards)

Master League

Retro Cup: Great League Edition

May 20–May 27 (4x Stardust from win rewards)

Great League

Catch Cup: Great League Edition

May 27–June 3 (4x Stardust from win rewards)

Great League

Ultra League

Master League

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Season Rewards

Guaranteed Rank-Up Encounters

Throughout the season, you will encounter specific Pokemon when reaching certain ranks in the Go Battle League. You will only encounter each of these Pokemon once per season, each found below with the rank needed to encounter them.

Guaranteed Rank-Up Encounters

Pokemon Encountered

Rank Required

Mienfoo

Rank One

Vullaby

Rank Six

Morpeko

Ace Rank

Frigibax

Veteran Rank

Dreepy

Expert Rank

Pikachu Libre

Legend Rank

Standard Reward Encounters

There will be different Pokemon that you can encounter throughout this season as a standard reward for winning in the Go Battle League. To encounter each of these Pokemon, you will have to reach a minimum Go Battle League Rank.

These Pokemon and the Rank required to encounter them can be found below.

Standard Reward Encounter Pokemon

Pokemon Encountered

Minimum Rank Required

Cubone

Rank 1

Paldean Wooper

Rank 1

Mienfoo

Rank 1

Bunnelby

Rank 1

Spoink

Rank 1

Skorupi

Rank 6

Vullaby

Rank 6

Jumpluff

Rank 11

Teddiursa

Rank 11

Barboach

Rank 11

Cetoddle

Rank 11

Alolan Marowak

Rank 16

Lapras

Rank 16

Pancham

Rank 16

Five-Star Raid Boss

Rank 20

Morpeko

Ace Rank

Frigibax

Veteran Rank

Dreepy

Expert Rank

Go Battle League Timed Research Pass

Like last season, there will be a Timed Research Pass available at the in-game shop free of charge, starting at the beginning of this season. This Timed Research Pass will remain active for the entire season, progressing through winning in the Go Battle League.

Each page of the Timed Research Pass will require you to earn 100 wins in the Go Battle League, rewarding you with Stardust, Rare Candy XL, Elite Fast TMs, Elite Charged TMs, and other items for each completed milestone and page.

Additional Rewards

This season, you will be given different avatar items for reaching certain ranks in the Go Battle League. These avatar items will be themed around Mustard, the Dojo Master from Pokemon Sword and Shield.

Each of these rewards can be found below with the rank required to earn them.

Avatar Item

Rank Required

Mustard-Style Hat

Ace Rank

Mustard-Style Pants

Veteran Rank

Mustard-Style Top

Expert Rank

Mustard-Style Pose

Legend Rank

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Season Events

Go Battle Week: Might And Mastery

This event will take place from Wednesday, May 21, 2025, at 12am local time to Tuesday, May 27, 2025, at 11:59pm local time.

For this event there will be three different bonuses available for players. During each day of this event, you will benefit from the following bonuses:

• Receive four times the Stardust from win rewards (not including Stardust from end-of-set rewards).
• You will be able to complete a maximum of 20 sets daily instead of five.
• The stats of Pokemon caught from Go Battle League rewards will have a larger variance.

Additionally, all players will be able to complete event-themed Timed Research, free of charge. Completing the tasks for this free Timed Research will reward you with different in-game rewards, including a Mustard-style hat.

Attack Changes And Additions

Switch Timer Update

A couple of seasons back, there was a significant change to the Switch Timer mechanic in Pokemon Go battles, the time you are required to wait after switching Pokemon before you switch again. For this season, this time will be set at 50 seconds, the same as last season's Go Battle League, Dual Destiny.

There may be future tweaks and changes to this in future seasons.

Attack Changes

This season, there are several attacks that are receiving stat changes in the Go Battle League. Each of these attacks and the changes being made can be found below.

Attack Changes

Attack

Changes Made

Psyshock

Decreased Energy cost.

Dazzling Gleam

Decreased Energy cost.

Decreased from 110 Power to 90 Power.

Aqua Jet

Decreased Energy cost.

Increased from 45 Power to 70 Power

Dynamic Punch

Decreased Energy cost.

Sludge

Increased from 50 Power to 70 Power.

Hex

Increased from 6 Power to 7 Power.

Increased Energy generation.

Acrobatics

Decreased Energy cost.

Air Cutter

Decreased from 60 Power to 45 Power.

Decreased Energy cost.

Added chance to increase user's Attack stat.

Rock Tomb

Increased from 70 Power to 80 Power.

Decreased Energy cost.

Lowers opponent's Attack stat by one stage.

Rollout

Decreased from 8 Power to 7 Power.

Night Shade

Decreased from 80 Power to 70 Power.

Foul Play

Decreased from 70 Power to 60 Power.

Decreased Energy cost.

Discharge

Decreased from 65 Power to 55 Power.

Decreased Energy cost.

Attack Availability

A handful of Pokemon will be able to learn new attacks this season, which were previously unavailable to them. These attacks and their details are provided below with the Pokemon that will now be able to learn them.

To teach these new attacks to a Pokemon that you already have, you will have to use Elite or standard Fast and Charged TMs.

Elite TMs will let you choose your Pokemon's new attack from those that are available to them, whereas standard TMs will give you a new one randomly.

New Available Attack

Attack Type

Pokemon

Icicle Spear (Charged Attack)

Ice

Piloswine

Mamoswine

Psyshock (Charged Attack)

Psychic

Togetic

Togekiss

Reuniclus

Bruxish

Psywave (Fast Attack)

Psychic

Venomoth

Lapras

Grumpig

Swift (Charged Attack)

Normal

Furret

Linoone

Drampa

Dynamic Punch (Charged Attack)

Fighting

Grumpig

Dusknoir

Sparkling Aria (Charged Attack)

Water

Lapras

Dazzling Gleam (Charged Attack)

Fairy

Sableye

Charm (Fast Attack)

Fairy

Ribombee

Rollout (Fast Attack)

Rock

Blastoise

Weezing

Wailmer

Wailord

Glalie

Rock Tomb (Charged Attack)

Rock

Cradily

Bombirdier

Sludge (Charged Attack)

Poison

Swampert

Swalot

Sludge Bomb (Charged Attack)

Poison

Dragalge

Poison Sting (Fast Attack)

Poison

Roserade

Trailblaze (Charged Attack)

Grass

Furret

Florges

Sucker Punch (Fast Attack)

Dark

Mightyena

Bellibolt

Bombirdier

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