Vitus essence?

[Jon.Topps]

So it's supposed to be for new cosmetics sold by Arbiters of Hexis. I don't see anything. What items and where do I find them? The enclave only has two people, the guy that takes your things for syndicate standing, and the spot to buy things. I don't see anything new in the store thing, but I'm probably just missing it.

[Ivara Ara]

You have the guy for the medallions, and then on the other side you have the guy for essences. He also sells some mods and stuff like that.

[No_Quarter]

go to Hexis at relays maybe?

[ScottAudio]

Per: https://forums.warframe.com/topic/1016610-chimera-update-2310/

Every hour you'll be presented with a new Arbitration.

These missions are always Endless!
Rewards are earned at double-the-usual interval (every 10 Defense waves, every 10 Survival minutes), etc.
Rewards are on an ABCCCCCCCCCCC (repeat C to infinity) rotation.
Any A/B/C interval reward you receive is kept after you die or fail the mission (anything picked up off the ground is lost though)!
Missions feature a new Arbiter-themed drone enemy that effectively shields nearby enemies. A keen team will coordinate to take these protective units out!

Each successful interval will earn you a new "Vitus Essence" resource that can be used to build some new cosmetic items offered by an Abiters NPC in the their respective Arbiters Enclave in any Relay.

PER PLAYER BOONS! Every Arbitration features a custom boon to you! A given Warframe and Weapon will receive substantial bonuses if used.

Note: Failure is a rare thing in Warframe, in the month of September only 2.5% of all missions were Failed. Prepare yourself for a new reality where failure may become the norm for these missions - can you overcome the odds!?
In other words you get one life and that's it.