Operation: Plague Star

Operation: Plague Star is a reoccurring event introduced , where players are tasked to destroy an Infested meteorite that crashes in the Plains of Eidolon, with its passengers threatening to overwhelm both Ostron and Grineer alike. On the PC build, the event originally began on November 15, 2017 and ran until November 27, 2017.
Unlike most events in WARFRAME, Operation: Plague Star is a reoccurring event, with the Infested "boil" regrowing and the Tenno are called on to cull it once more.
==Plague Star Appearances==
 	Event Start 	Event End 	Total Duration
First Appearance 	November 15, 2017 (PC)December 1, 2017 (PS4 and XB1) https://forums.warframe.com/topic/876895-live-pc-operation-plague-star/ 	November 27, 2017 (PC)December 18, 2017 (PS4 and XB1) 	1 week, 5 days (PC)2 weeks, 3 days (PS4 and XB1)
First Reappearance 	April 5, 2018 (PC) https://forums.warframe.com/topic/941681-pcoperation-plague-star-meteorite-spotted-on-the-plains-of-eidolon/May 10, 2018 (PS4 and XB1) https://twitter.com/PlayWarframe/status/994646035447336960 	April 17, 2018 (PC)May 22, 2018 (PS4 and XB1) 	1 week, 5 days
Second Reappearance	September 19, 2018 (PC) https://forums.warframe.com/topic/1010351-pc-operation-plague-star-returns/November 2, 2018 (PS4 and XB1) https://forums.warframe.com/topic/1024127-operation-plague-star-returns-on-ps4-xb1/	September 30, 2018 (PC)November 13, 2018 (PS4 and XB1)	1 week, 4 days
Third Reappearance 	June 14, 2019 (All Platforms) https://forums.warframe.com/topic/1102892-operation-plague-star-on-all-platforms/* 	June 26, 2019 (All Platforms)* 	1 week, 5 days
Fourth Reappearance	January 17, 2020 (All Platforms) https://forums.warframe.com/topic/1162521-operation-plague-star-on-all-platforms/ 	January 27, 2020 (All Platforms) 	1 week, 3 days
Fifth Reappearance 	September 8, 2021 (All Platforms) https://twitter.com/PlayWarframe/status/1431324001939431427 	September 30, 2021 (All Platforms) 	3 weeks, 1 day
Sixth Reappearance 	November 7, 2023 (All Platforms) https://www.warframe.com/news/plague-star-is-back 	November 21, 2023 (All Platforms) 	2 weeks
*This was the first time this event happened for Nintendo Switch players, as well as the first time the event would happen at the same time with the same duration on all platforms.
==Event Synopsis==
Rally your Squad and defend the Plains of Eidolon!
A mysterious meteorite has crashed just outside of Cetus revealing a horrific boil. The boil is growing and the Ostrons have sighted Infested life forms emerging from it. We need to act now before they make their way to Cetus.
Konzu has received reports that Vay Hek possesses a toxin that can destroy the boil. But Vay Hek won’t help; he sees this infested boil as a means to rid the Plains of Cetus of the Ostrons.
We need to obtain a batch of the toxin and destroy the boil before it becomes unstoppable. Visit Konzu in Cetus to learn his plan for retrieving the toxin from Vay Hek.
==What You Need To Do==
*For the duration of the event Konzu has a specific Plague Star Bounties where players are tasked with stealing the Toxin from the Grineer and using it on the boil. The Bounty is divided into four phases:
*#First, players must raid the Grineer's Thrax Toxin storage, which is located in one of the various Caves that dot the plains. The Toxin storage unit has a rounded pyramid shape dotted with yellow lights, with orange fluid visible inside of it and a container rising and sinking on top of it. It is generally located at the far end of the cave.
*#After acquiring the Thrax Toxin, players must head to a Toxin mixer, which will spawn in an Armored Vault in a given Grineer outpost. Once the Toxin is put in the mixer, players must then defend the mixer for 3 minutes from Grineer troops.
*#Once the Toxin is mixed, players are instructed to head to a downed Grineer Drone which will deliver the Toxin to the boil. As with Drone Hijack missions, players must defend the drone from Grineer and Infested attackers as it travels to the boil.
*#When the Drone reaches the boil, the boil responds by spawning Infested to defend itself. Here players must thin out the Infested horde while the Toxin poisons the boil, with a percentage gauge denoting their progress. The selected mission changes the difficulty of this phase:
*#*Tier 1 spawns only the Infested horde defending the boil.
*#*Tier 2 spawns a Hemocyte to defend the boil at every 25% interval to a total of 4 Hemocytes, along with the Infested horde.
*#*Tier 3 has the same spawns as Tier 2, all with increased levels and The Steel Path modifiers.
**Once the gauge reaches 100%, the Bounty is completed, awarding a variable amount of Standing based on the selected mission difficulty. Players are free to remain on the Plains, return to Cetus or visit a bounty tent to undertake the mission again.
==What You Need To Know==
*Different mission tiers require different materials to start:
**Tier 1 - Plague Star has no prerequisite items to start.
**Tier 2 - Plague Star Advanced requires both an Eidolon Phylaxis and Infested Catalyst to start.
**Tier 3 - Plague Star (Steel Path) requires both an Eidolon Phylaxis and Infested Catalyst to start and the player must be eligible for The Steel Path, but yields even greater rewards.
**The blueprint for Eidolon Phylaxis is purchasable from the Operational Supply Syndicate, which is available during the event, while the blueprint for the Infested Catalyst is available from Clan Bio Lab Research.
*Throughout the duration of the event, the Infestation will spawn on the Plains of Eidolon regardless if the player is doing the Bounty or not, and will attack nearby Tenno, Grineer, and even the Eidolons during the night.
**The Infested will consist solely of Chargers, Runners, Leapers, Volatile Runners, Ancient Disruptors, Tar Mutalist MOAs, and Mutalist Ospreys carrying normal Crawlers.
**Infested Spawn Pods, much like the ones spawned by Boilers, can be found throughout the Plains, either on the Plains as is or falling from the sky.
*The boil deals 200 damage per second to any Tenno standing on or even flying close to it, so players are advised to stay away from it as much as possible.
**The damage will not affect enemies in any way, allowing them to walk on the boil without issue.
**In the event that a player does get knocked down from the boil's damage, it is recommended to use a Revive instead of someone risking a rescue, as the damage may bring the rescuer(s) down as well.
==Event Rewards==
===Operational Supply Standing===
*Base Standing is rewarded based on tier of bounty selected:
**Plague Star: 1,025
**Plague Star - Advanced: 3,200
**Plague Star (The Steel Path): 3,800
*Bonus Operation Supply standing is rewarded during the Drone escort stage by keeping the drone above 80% health.
**Plague Star: 25 Bonus
**Plague Star - Advanced: 75 Bonus
**Plague Star (The Steel Path): 100 Bonus
*Unlike most events, players can select their Operation Rewards through the Operational Supply Syndicate, which is only accessible from Nakak during Operation: Plague Star. The Syndicate has its own rank system, and players can spend the Standing gained from the Plague Star bounty on the following rewards;
===Operational Supply Offerings===
===Hemocyte Drops===
*On defeat, the Hemocyte may drop one of six mods of the Hunter Mod Set, which consists of the following mods:
HunterAdrenalineMod.png|x170px|link=Hunter Adrenaline|
HunterCommandMod.png|x170px|link=Hunter Command|
HunterMunitionsMod.png|x170px|link=Hunter Munitions|
HunterRecoveryMod.png|x170px|link=Hunter Recovery|
HunterSynergyMod.png|x170px|link=Hunter Synergy|
HunterTrackMod.png|x170px|link=Hunter Track|
*Additionally, the Hemocyte will also drop a Hemocyte Cystolith, which is a required component for constructing a Clan trophy.
*If a player wishes to acquire all the exclusive rewards (excluding gear items) the player will need a total, from 0, 133,500 (127,500 from rank 3) standing. This excludes items such as Fosfor and Ether Daggers as those are found elsewhere but does include the Snipetron. 
===Bounty Rewards===
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|-|Stage 1=
|-|Stages 2 & 3=
|-|Final Stage=
</tabber>
==Trivia==
*This event was first teased as a meteor crossing the sky over the Plains of Eidolon after , and officially announced during Devstream 100 on November 3, 2017, with the meteoroid crashing into the Plains at 3pm EST in the middle of the Devstream.
**The event was supposed to start shortly after it crashed into the Plains, but various issues led to the event being delayed until November 15, 2017.
*The meteoroid was instantly visible in the Plains after the official announcement. Players that were on the Plains during the event could see it after leaving to Cetus and re-entering.
*As of , this event has the most opposing factions present in one mission: the Tenno, the Grineer, the Infested, and, at night time, the Sentients and Vasca Kavats.
**The Steel Path will also spawn an Acolyte every few minutes, bringing the total number of factions to six.
*During the last phase of the bounty, the Lotus may tell the player that the toxin has caused the boil to undergo peristalsis, which is a one-way muscular contraction/relaxation wave commonly associated with the digestive tract.
==Media==
==Patch History==
==References==
es:Operación: Estrella infestada
fr:Opération : Fléau Céleste
ru:Операция:_Чумная_Звезда
Category:Event
Category:Infested
Category:Update 22