Players that have purchased/spend a certain amount of NX may decide to choose from a selection of categories based on their spending. This event will count if you have purchased within June 24 - June 30.
The event consists of three categories for players that will spend a certain amount of NX. These are ranging from 90,000 NX, 120,000 NX, 150,000 NX and will have to choose one set of reward from the category they are in.
Details: Crokhoons Treasure Trove 2019