1. Open the fields on the first board and if you have luck and find 3 items of the same type, you receive the item as a reward.

2. You will have 3 free try, the next two cost 2 emeralds/diamonds, and the rest costs you 2 diamonds.
3. Note that every board resets on every 12 hours and this will close your open fields, but it will give you another 3 free tries.
4. In case you can't wait for the board to reset automatically, you can do this in advance for 5 diamonds and try again.

5. Collect all rewards from one board will get you special unique reward.

6. This kind of event lasts for 10 days.