Mage Knight Insert: - Rules of Play says:
Insert compatible with Mage Knight Board Game®, and the Shades of Tezla®, Krang Character® and The Lost Legion® expansions. The design provides both efficient storage and improved game play. Many of the trays can be utilised during the game, and they greatly aid set-up and clear-away times. The board and rule books act as a lid on top of the trays.