Feather of Ma'at

Tragoedia calls Chazz Princeton's Light and Darkness Dragon this name, as a reference during his trial through the Millennium Scale.

Tragoedia commited many sins, which were judged by comparing his heart to the Feather of Ma'at (also known as Light and Darkness Dragon's feather) and seeing how heavy his heart is. The heart is carried by the White Feathered Spirit, Winged Kuriboh. The sin caused the white creature to turn black.

The Feather of Ma'at was used by Shadi in the same fashion, when he tested Kanekura