A Dimensional Backtravel Diamond, also known as a DBD, is a object from Into the Fourth Dimension that lets you travel to the previous dimension in a dimensional cycle, and can very between dimensions in appearance and locations. If they are used once, they can disappear, but can also be equipped to a Warp Pipe that lets it stay there until it's removed and thus form a link between dimensions. Certain dimensions in cycles have pathways that would allow access to other dimensions instead of the use of a DBD.
Dimensional Backtravel Diamond

10 different colored Dimensional Backtravel Diamonds

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