Key to the Clockworks
From Tardis Wiki, the free Doctor Who reference
The Key to the Clockworks was a a perfect cube split into six pieces that when formed together allowed access to the gateway between Universes. (PROSE: Future Legend)
History
When Panda was kidnapped by the PussyWorlders he found them attempting to assemble the key. Panda was aware that Iris Wildthyme had previously been enlisted to collect the six pieces by a powerful being but she found herself in trouble when she accidentally chipped a corner off the sixth piece. (PROSE: Future Legend)
Behind the scenes
The Key to the Clockworks was a parody of the Key to Time.
