BCW introduced the Prime X4 Gaming Box (BCWPX4BLK) in early 2020. While the original Prime X4 is a great storage box for particular card games, players of the MTG Commander format demanded a larger box to store double-sleeved 100 card decks. The Professor at Tolarian Community College gave the smaller version an A- grade, and suggested a larger version could do even better.
Like the original Prime X4, the larger “XL” version has four cells to hold cards. The Prime X4 XL will hold four decks of 100 double-sleeved cards. A pad under each deck makes it easy to get your finger under the cards when removing them. Dividers can be removed, allowing you to store double-size Commander or Planechase cards, and the dividers can be stowed in the back of the box if needed. Extra spaces in the back are great for tokens and extra cards. The Prime X4 XL includes two removable dice trays. These boxes are stackable. Lastly, the latching lid keeps everything safe and secure.