Diva later used it to transport Scud and his gang to another dimension, and used it to teleport from the mall in Domino City to the Valley of the Kings in Egypt, where he disintegrated a KaibaCorp employee, and attempted to kill Kaiba with it, albeit unsuccessfully, then attempted to kill Ryo Bakura and Joey Wheeler with it. In the latter instance he was foiled by Atem. While in the Valley of Kings, he transformed it into a Duel Disk to Duel Kaiba, and later to Duel against Yugi.
After Dark Diva's defeat, Kaiba took possession of the Cube, using it to enter the afterlife in order to Duel Atem.
Using the cube, Diva can transport people to an alternate dimension, where they will disintegrate and die if not rescued. It can also directly disintegrate people.
The world he sent Joey to was made up of and sustained by his memories, and as soon as he forgot something, it would disappear. However, Joey could also remember things to recreate a place, such as the street he rode his bike down earlier.
- Yu-Gi-Oh! The Dark Side of Dimensions 1:51:41 "Sera: When used correctly, the Plana can create a world of beauty, full of peace and harmony. But if even a single drop of evil mixes in, it will remake the world into a dimension of darkness. Such is the power of the cube. Such is the power of the eighth Millennium Item."
- Yu-Gi-Oh! The Dark Side of Dimensions (in Japanese) 1:51:45 "Sera: Is the cube a portal to other dimensions? It's the eighth Millennium Item!"