Season 13

Season 13 of GO Battle League, also called GO Battle League: Mythical Wishes, lasts from December, 2022 to March , 2023. It is preceded by Season 12 and will be succeeded by Season 14. This GO Battle League Season runs concurrently with Season of Mythical Wishes.

Rewards
Basic Premium

Stardust The random items can include:
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Reaching Ace rank and above awarded avatar items inspired by Steven Stone.

Pokémon
Guaranteed first Pokémon encounters:
 * Metang: rank 1 (one only)
 * Mareanie: rank 6
 * Axew: Ace rank
 * Noibat: Veteran rank
 * Goomy: Expert rank
 * Pikachu Libre: Legend rank (one only)

Certain Legendary Pokémon, Mythical Pokémon, and Ultra Beasts could be obtained starting at rank 20 during their time in tier 5 Raid Battles.

End-of-season rewards

 * (rank 19 or above)

Mythical Wishes: GO Battle Days
Mythical Wishes: GO Battle Days took place on January, 2023, 12 a.m. local time to January , 2023, 11:59 p.m. local time. Great League, Ultra League, and Master League were available during this GO Battle Day. Stardust from completing sets would not be counted for the bonus.

GO Battle Day: Vulpix
GO Battle Day: Vulpix took place on February, 2022 from 12 a.m. to 11:59 p.m. local time. Stardust from completing sets would not be counted for the bonus.

Attack Updates
At the start of this Season, certain Attacks had their stats changed and certain Pokémon received updates to their obtainable Attacks.

Attack Changes

 * Wing Attack: Energy gain increased from 7 to  in Trainer Battles.
 * Poison Fang: Energy cost increased from 35 to 40 in Trainer Battles.
 * Charm: Base power decreased from 16 to 15 in Trainer Battles.

Attack Availability Updates
Some Pokémon received updates to their obtainable Attacks. These were added to their standard Attack pools.