Saryn

"The beautiful and mysterious SARYN is one of the most feared Warframes in the solar system. Her venomous attacks are horrifyingly effective against organic and synthetic enemies, and her ability to "shed" her skin makes her very elusive."

- In-game description

Saryn is a poison-based Warframe released in Update 7.

Acquisition
The Saryn Warframe can be purchased for 225. The blueprint can be purchased for  35,000.

Component blueprints drop from planet Sedna on level Merrow - Boss: Kela De Thaym

Cosmetics
Saryn can be equipped with a Hemlock helmet.

Grants movement speed boost with a reduction to max health.

Trivia

 * After the poll on the founders forum she was to be named after Sarin, which is a colorless, odorless liquid,used as a chemical weapon owing to its extreme potency as a nerve agent. But when a first responder to a sarin attack suggested a name tweak, along with Sarin sounding too overall masculine, DE decided it was best to alter it to Saryn. (source)