The Eidolon Phylaxis is a consumable Gear item unique to the Operation: Plague Star Event. It, along with the Infested Catalyst, is required to access the Advanced and The Steel Path variants of the Plague Star Bounty and is consumed upon mission completion.
Acquisition[]
The reusable blueprint is acquired from Nakak in Cetus for 
2,000 and 
4,000 upon reaching Rank 1 - Collaborator with the Operational Supply Syndicate. Crafting in the Foundry will give 5 charges of the Phylaxis for use.
| Manufacturing Requirements | |||||
|---|---|---|---|---|---|
 500 |
 15 |
 20 |
 10 |
Time: 1 min | |
Rush:  5
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 Market Price: N/A
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 Blueprints Price:  4,000 + 2,000
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Trivia[]
- Phylaxis is a medical term that usually refers to defenses against infections. It is often used as a suffix to denote protection from various conditions, e.g. prophylaxis.
- Given the circumstances of its use, the Eidolon Phylaxis' name may be derived from the above term as well as Anaphylaxis, a severe allergic reaction characterized by rashes and swelling of the throat and mouth, among other symptoms. This gives some insight as to how the Phylaxis may work in-universe.
- Prior to Hotfix 34.0.7 (2023-11-02), the Eidolon Phylaxis had to be added manually during the Stage 2 mixing phase. Each use of the Phylaxis would increase the levels of the enemy Infested and yield greater
Standing rewards.
Patch History[]
Hotfix 34.0.7 (2023-11-02)
- PLAGUE STAR HAS RETURNED!
Plague Star 2023 Qol Changes:
It's been a few years since Vay Hek’s favorite surgery simulator graced the Origin System, so we wanted to make a few updates to streamline the difficulty curve and improve the experience of the event.
Most notably, Plague Star no longer requires you to mix the Toxin during the Mission itself, meaning you are no longer required to manually contribute Infested Catalyst and Eidolon Phylaxis from your Gear Wheel. These items will now be automatically applied to the mission upon beginning the Advanced and Steel Path Bounties.
HOW TO PLAY
Speak with Konzu in Cetus (Earth) and select one of the three Plague Star Bounties. Complete the stages to earn rewards and Operational Supply Standing.
NOTE: In order to play the Advanced and Steel Path Bounties, all players in the Squad must have both an Eidolon Phylaxis and Infested Catalyst in their inventory. Successfully completing these Bounties will consume one of each.
Plague Star FAQ:
"Why can't I equip Eidolon Phylaxis/Infested Catalyst to my Gear Wheel?"
We have changed it so that as long as you have it in your inventory, you no longer need to equip it to your Gear Wheel. It'll automatically apply to the mission - gone are the days where you need to manually add it to the mixer.
Update 22.18 (2018-04-20)
- Fixed Host migrating while fighting the Hemocyte causing bonus Affinity to be lost for using Infested Catalysts and Eidolon Phylaxis.
Update 22.3 (2017-11-15)
- Introduced.
