Nyx/Main

Nyx is a psychic-themed Warframe released in Update 6. Her abilities allow her to disrupt movement and coordination within enemy ranks, making her a formidable ally in battle.

Acquisition
The Nyx Warframe can be purchased for. The main blueprint can be purchased for.

Component blueprints drop from Phorid  (Infested Invasion)

Trivia

 * Jade was this warframe's name before it was renamed with Nyx.
 * Nyx is also the name of the Greek goddess of the night.
 * Apart from the helmet and gender, the visual design of this Warframe is almost identical to Excalibur.
 * During pre-alpha stages of the game DE tried out alternative genders to Warframes; the Nyx model was originally intended to be the female variant of Excalibur. However, when the idea was finally scrapped, the female Excalibur was given its own powers and thus turned into Nyx. During the time when Nyx was the female Excalibur the helmet was not the same, instead it was very similar to the current Excalibur helmet and can be seen when obtaining the Menticide helmet. Source
 * Nyx is similar in design to Nadia Sudek's Nemesis armor from Dark Sector.
 * The silhouette Nyx's Chaos projects in front of affected enemies used to resemble what seems to be a female variant of the Excalibur warframe, just what Nyx was in early development stages. It can also be seen here around 0:32. This was recently patched to show a silhouette of the current nyx.
 * If you use Absorb right before the extraction cutscene plays you will be meditating during extraction.