In the game of Dungeon Dice Monsters, unfolding a die on the field is called a Dimension. Dimensioned dice are called Dungeon Pieces, and they form the Dungeon Paths that will allow your monsters to reach your opponent's Monster Lord.
Each time that you roll 2 Summon Crests of the same Level, you can dimension 1 of your dice that shares the same Level and Type of at least 1 of the rolled Summon Crests. Each time that you dimension a die successfully, you must Summon a monster or an Item of the appropriate Level and Type to the newly formed Dungeon Piece.
The first die that you dimension in a duel must be attached to your Monster Lord Area. Each die that you dimension subsequently can be attached to another of your Dungeon Pieces.