Die Form

Sora can be transformed into a 6-sided dice, similar to his Card Form, during his fight with Luxord or when combating a Gambler Nobody and you fail at it's game.

During this time, he hops around as a dice, and can only attack and move by rolling. You can increase the damage of your attack in Die Form when you jump unto enemies. The Drive Gauge is changed to a form bar and will count down to how long Sora has left as a dice. However, since the only way to move is to attack, and certain abilities force Sora to stay in a form until he finishes a combo, constantly trying to escape while losing track of the Drive Gauge could cause Sora to stay in Dice Form for much longer than usual.

http://i531.photobucket.com/albums/dd356/blackbat102/deisora2.jpg
Sora as a die