The Mystery Element is a white element in Final Fantasy Crystal Chronicles obtained by completing certain tasks within the Lynari Desert.

When a crystal caravanner's chalice receives this element, they are able to pass through any Miasma Stream without having the corresponding element. Players must perform the tasks as they appear in the poem to obtain the mystery element. The tasks relate to the tidbits of poems Gurdy recites as a thanks for saving him.

Lightning brings the cactus pain.
Now it all begins again.

Of crumbled inn few reminisce.
Its faulty beams will not be missed.

Rotted Shelter sinks under weight.
Land's bounties grace no camper's plate

Lonely mushroom bursts to flame.
In the land that quicksands claim.

Three rocks await the winter's kiss.
One by one they meet their bliss.

In the end shall bloom a flower.
Sacred light reveals its power.