Code Key

A Code Key (コードキー, Kōdo Kī) is a mystical card-like artefact that appears in Digimon Savers: Another Mission. Each of the seven Code Keys can be used to transform someone exhibiting a deadly sin into one of the Seven Great Demon Lords corresponding to the crest depicted on that Code Key.

Structure
The Code Keys each have Digimoji displayed on the back which reads "THE SEVEN GREAT DEMON LORDS" and "THE SEVEN DEADLY SINS", and on the front, written in the following format:

DIGIMON NAME (CREST) DIGIMON NAME:SIN SPECIAL MOVE 1 SPECIAL MOVE 2 SPECIAL MOVE 3

After Kagura Yuma was captured by two Pico Devimon and sent to the Dark Area by her own brother, Kagura Tsukasa, her lusting for her parents' love along with the Code Key of Lust transformed her into Lilithmon. After Lilithmon was defeated by Masaru, Thoma, Yoshino, Ikuto and their Partner Digimon, Yuma was released. Kosaburou and his Partner, Piyomon tried to steal the Code Key of Lust, but Thoma and Gaomon were prepared and intercepted Piyomon when she was about to take the Code Key. After Kosaburo and Piyomon escape, Kagura arrives to where the battles took place saying that he will take the Code Key of Lust as "evidence". After Kagura's betrayal is revealed, he uses the Code Key of Lust, along the Code Keys of Sloth, Greed, Gluttony, Envy and Wrath to unlock the Seal to the Dark Area and free Lucemon.