Noxtra was the planet within the Supernal Triad that represented shadows and darkness. While dominant, it once heralded Twilight's influence over the Triad. The planet was sooty black, pockmarked with craters and gullies that ran like rivers across its surface, and it may have been cloaked in a thick layer of smoke and shadow. It was known to alchemists as the "planet of salt."
On Phaestian 13, 427 AF, the planet collapsed, along with its companions Somnustra and Lunastra, during the Eternal Night.