Starting from November 15th, 2019, players could visit Pokémon Centers in Japan to obtain a Mystery Gift containing ingredients that can be used for cooking curry in Sword & Shield's Pokémon Camp.
A "mystery" ingredient was also announced to be part of the distribution, and it was discovered that the mystery ingredient is the Gigantamix.
There were 6 different types of wonder cards, and players could collect a different one everyday, per in-life Pokémon Center visit.
No end date for this distribution has been announced yet.
(out of 100)
Ingredient & Berries
For clarification, the weight decides the probability of getting that card. Meaning for example, the Gigantamix card has a 5% chance of occurring.
As of LGPE, wonder cards are no longer stored in saves. As such, players will not be able to inject this event into their save using PKHeX