Some of the best content that you could participate in when you play Lost Ark takes place during the endgame. Some of this endgame content includes events and dungeons like Chaos Dungeons and Cube events. However, if you ever want to start one of these events, you need to complete certain prerequisites. Here, we outline the prerequisites for Cube events.
For starters, you need to get a hold of a quest titled Guide Announcement: Cube. It isn't very difficult, but it does require you to be very diligent and patient. Once you unlock Chaos Dungeons, you will notice random drops throughout every playthrough of these dungeons. After doing enough of them, one of these drops will include an item called Entrance Ticket: Cube (Bound).
Related: How to unlock the Cube in Lost Ark
At that point, you can go to your Journal and select the Guide tab to find the Guide Announcement: Cube quest available for you to begin. Upon completing this quest, you will be able to start doing Cube events. Take advantage of all their rewards.
For more Lost Ark, check out Perception Shards: What are they and How to get them in Lost Ark on Pro Game Guides.