There will be various double rewards for buying diamonds in mystery shop, and it is much more than the amount you recharge!
How to open a mystery shop?
Open any store in the game (gold coins, diamond recharge, card box, champion points exchange, etc.). ) to trigger randomly.
Mystery store opening probability
What about mystery shop? This is random. Some players say that the probability of going to the champion store will be greater, so give it a try.
Players can click on the map in the upper right corner, which will have the server name of Hogwarts/player's choice (such as diagon alley);
If it's the first time to go to mystery shop, switch to diagon alley first, and then click anywhere, and you can send it to the street.