Stormblood Eureka Relic Weapon Guide

In this comprehensive guide, we will take you through the intricacies of the Eureka zones, providing you with the knowledge and strategies you need to conquer its trials, unlock the mysteries it holds, and ultimately acquire your very own Eureka Relic Weapon. Instead of being tied directly to the Eureka quest line, the Eureka Weapons are obtained by farming tokens that drop from enemies in the various maps.

Once completed, the Replica Weapon for each step of the Relic quest chain will be available to purchase from Staelhundr the Replica Vendor in Kugane – Pier #1 (X: 7.8 Y: 14.2).

Introduction to Eureka

Eureka refers to the series of instanced zones added in the Stormblood expansion, not the be confused with Deep Dungeon: Eureka Orthos added in Endwalker. These open world areas are designed to bring back the classic MMO feel of challenging exploration and battle.

Eureka zones featurte their own set of mechanics and rules that are separate from the rest of the overworld in Final Fantasy XIV. For example, players must gain Elemental Experience points by defeating enemies which allows them to level up and access newer areas with stronger enemies and bosses.

The Eureka quest chain is tied to the Stormblood Relic weapons for combat classes so you will need to have an understanding of how to progress through the Eureka zones if you plan on obtaining a relic weapon.

Elemental EXP Boosts, Potions & Bonuses

Because the leveling system in Eureka is separate to the rest of the overworld, there are a number of buffs, items and gear that you should be aware of before entering Eureka. You are also free to change your Class at any time to deal with different situations as your Elemental Level will be retained.

Eurekan Potions

Eurekan Potion is a restorative item that will gradually restore HP for 40s and has a recast of 45s.

These can be purchased from the Expedition Provisioner for 300 gil each.

Potion of Harmony (+10% Elemental EXP)

Potion of Harmony grants a 10% boost to Elemental Experience points that lasts for 60m (90m if HQ).

These can be crafted or bought from the Market Board.

Chain Bonuses

Defeating consecutive monsters begins a Chain Bonus which grants increased Elemental EXP and an enhanced drop rate.

Eureka Anemos

Eureka Anemos is the first zone that you will be traversing. To unlock Eureka Anemos and begin the Eureka quest chain, you will need to speak to Galiena in Rhalgr's Reach (X: 9.8 Y: 12.5) and complete the quest And We Shall Call it Eureka.

Once complete, you'll now be able to speak to Rodney near the Pier #1 Aethernet Shard in Kugane (X: 8.5 Y: 14.2) to travel to enter Eureka Anemos.

Upon entering, you will see Krile with a quest marker – speak to her and then speak to the subsequent NPC's with quest markers for an explanation of the Elemental system. Affix your first Magicite to the Lightning element to begin with.

After speaking with Krile again, you'll be able to enter Eureka Anemos to fight monsters and level up. Remember to attune with the Aethernet Shard in the starting area.

Elemental Affinities

You're able to change your Elemental affinity at any time provided that you still have magia aether remaining. Magia aether will recover over time when consumed.

Having the same elemental affinity as an enemy with decrease damage receive while having an advantageous elemental affinity will increase damage dealt to the enemy.

Every enemy will have their elemental affinity displayed next to their name, you can right click the enemy's HP bar in your UI to automatically switch your Element to have an offensive or defensive advantage against the enemy.

You can use the following chat commands to automate the Magia system:

/magiaauto atk – Automatically spin the magia board to match the elemental weakness of current target.
/magiaauto def – Automatically spin the magia board to match the elemental affinity of current target.
/magiaauto off – Disable automatic spinning.

As a general rule, you'll want to stick to monsters that are at your level or above, but never more than five levels above your own elemental level. Ultimately, your goal is to level up and work through the Eureka quest line.

You can use the Notorious Monsters spawn table for guidance on which monsters to grind for levelling up.

The Eureka Tracker provides full detailed maps allowing you to see the locations of all enemies and their affinities, the Eureka Bestiary can also help you search for the correct monster at your level. These will be indispensable tools in helping you level up smoothly.

Anemos Quests

At Elemental Level 3, speak to Krile in the starting area then head to X: 13.5 Y: 20.2 and interact with the Confluence on the ground inside the building continue the mini quest line. Go back and talk with Krile again in the starting area. This will then unlock the Expedition Lockpick to trade in Anemos Lockboxes for rare items. You'll now be able to add another Magicite to an element with the Magia Melder.

You will also unlock Gerolt who will allow you to trade in Protean Crystals for the Stormblood Eureka Relic Weapons.

At Elemental Level 5, speak to Krile in the starting area then head to X: 24.4 Y: 23.1 and interact with the Confluence on the ground. Go back and talk with Krile again in the starting area. You will receive yet another Magicite to boost your Magia board.

At Elemental Level 9, you'll be able to attune with the Aethernet Shards in the zone.

At Elemental Level 13, speak to Krile in the starting area then head to X: 20.9 Y: 13.0 and interact with the Confluence on the ground. Go back and talk with Krile again in the starting area. You will receive another Magicite to boost your Magia board.

At Elemental Level 17, speak to Krile in the starting area then head to X: 32.8 Y: 18.3 and interact with the Destination on the ground. You will receive your 5th Magicite to boost your Magia board, place all Magicite into a single Element to maximize your capabilities. Go back and talk with Krile again in the starting area. After that, go to X: 25.1 Y: 16.1 and interact with the Aethernet Control.

You will now need to obtain 99 Anemos Crystals to progress. Anemos Crystals are obtained by completing FATE-like battles, otherwise known as Notorious Monsters in the Eureka zones.

Notorious Monsters

Notorious Monsters are very similar to FATEs however they each have specific conditions that must be satisfied before they will spawn as well as a roughly 120 minute spawn timers.

Players within a Eureka map are to work together and cooperate to defeat Notorious Monsters and keep track of respawn times.

You'll usually be required to defeat 60-120 of a specific enemy to spawn a Notorious Monster but weather or time of day may also sometimes play a part.

Anemos Notorious Monster Spawn Conditions

Use the Eureka Trackers to keep track of weather and respawn timers
Night = 5:00PM to 5:00AM ET
Weather changes at 12:00AM, 7:00AM and 4:00PM ET

F.A.T.E.	Boss	Spawn Trigger	Location
Lv. 1 Unsafety Dance	Sabotender Corrido	Lv. 6 Flowering Sabotender	X: 13.8 Y: 22.3
Lv. 2 The Shadow over Anemos	Lord Of Anemos	Lv. 7 Sea Bishop	X: 29.3 Y: 27.9
Lv. 3 Teles House	Teles	Lv. 8 Anemos Harpeia	X: 24.9 Y: 27.7
Lv. 4 The Swarm Never Sets	Emperor Of Anemos	Lv. 9 Darner	X: 16.8 Y: 22.6
Lv. 5 One Missed Callisto	Callisto	Lv. 10 Val Bear	X: 26.3 Y: 22.4
Lv. 6 By Numbers	Number	Lv. 11 Pneumaflayer	X: 22.8 Y: 22.7
Lv. 7 Disinherit the Wind	Jahannam	Lv. 12 Typhoon Sprite (Gales)	X: 18.8 Y: 19.3
Lv. 8 Prove Your Amemettle	Ammemet	Lv. 13 Abraxas	X: 15.0 Y: 16.4
Lv. 9 Caym What May	Caym	Lv. 14 Stalker Ziz	X: 12.6 Y: 14.3
Lv. 10 The Killing of a Sacred Bombadier	Bombadeel	Lv. 15 Travelling Gourmand (Night)	X: 28.1 Y: 20.0
Lv. 11 Short Serket 2	Serket	Lv. 16 Khor Claw	X: 25.1 Y: 18.7
Lv. 12 Don't Judge Me, Morbol	Judgmental Julika	Lv. 17 Henbane	X: 21.7 Y: 14.3
Lv. 13 When You Ride Alone	White Rider	Lv. 18 Duskfall Dullahan (Night)	X: 20.3 Y: 13.2
Lv. 14 Sing, Muse	Polyphemus	Lv. 19 Monoeye	X: 26.4 Y: 14.5
Lv. 15 Simurghasbord	Simurgh's Strider	Lv. 20 Old World Zu	X: 29.4 Y: 12.7
Lv. 16 To the Mat	King Hazmat	Lv. 21 Anemos Anala	X: 35.3 Y: 18.9
Lv. 17 Wine and Honey	Fafnir	Lv. 22 Fossil Dragon (Night)	X: 34.9 Y: 21.0
Lv. 18 I Amarok	Amarok	Lv. 23 Voidscale	X: 8.9 Y: 18.1
Lv. 19 Drama Lamashtu	Lamashtu	Lv. 24 Val Specter (Night)	X: 7.8 Y: 25.8
Lv. 20 Wail in the Willows	Pazuzu (Gales)	Lv. 25 Shadow Wraith (Night)	X: 7.2 Y: 19.5

Once you've obtained 99 Anemos Crystals and handed them in to the Aethernet Relay, use Return to go back to the starting area and speak to Krile.

Congratulations on completing the quest line for Eureka Anemos. You'll now be able to enter Eureka Pagos by speaking to Rodney near the Pier #1 Aethernet Shard in Kugane (X: 8.5 Y: 14.2).

Eureka Pagos

Speak to Rodney in Kugane (X: 8.6 Y: 14.2) to accept and complete the quest And We Shall Call It Pagos. Similarly to Anemos, we will be completing the quest line for Eureka Pagos which allows you to progress once you reach certain Elemental Levels. Your Elemental Level will be carrying over from Anemos. Speak to Krile in the starting area of Eureka Pagos to begin and be sure to attune with the Aethernet Shard in the starting area.

Pagos Quests

At Elemental Level 21, speak to Krile in the starting area then head to X: 16.5 Y: 28.8 and interact with the Depleted Aetherial Stream on the ground. Return to the starting area and speak to Krile again.

At Elemental Level 23, speak to Krile in the starting area then head to X: 26.7 Y: 30.7 and interact with the Depleted Aetherial Stream on the ground between the ice glaciers. Return to the starting area and speak to Krile again.

Be sure to slowly walk past the sleeping Level 40 Frozen Void Dragon at X: 27.6 Y: 25.2 or any that you encounter in Eureka Pagos, as they can easily kill you if you engage them in combat.

At Elemental Level 25, speak to Krile in the starting area. This will unlock Gerolt, who you'll be able to speak to if you have obtained the i355 Anemos Relic Weapon.

Next, head to X: 30.9 Y: 20.7 and interact with the Destination on the ground. Next, go to X: 30.7 Y: 21.0 and examine the Destination again. Return to the starting area to speak to Krile.

At Elemental Level 29, speak to Krile then head to X: 9.9 Y: 21.4 by travelling south from the Geothermal Studies Aethernet Shard and jump down the ledge to reach the location and speak to Ejika Tsunjika then head back to the starting area to speak to Krile. Be wary of the sleeping Frozen Void Dragons at X: 14.4 Y: 14.8 and X: 18.4 Y:17.9.

At Elemental Level 35, speak to Krile then head to X: 21.8 Y: 12.4 by travelling east from the Geothermal Studies Aethernet Shard and examine the Destination on the ground. Avoid aggroing any Level 40 enemies by walking slowly past them without getting too close.

Congratulations on completing the quest line for Eureka Pagos. You'll now be able to enter Eureka Pyros by speaking to Rodney near the Pier #1 Aethernet Shard in Kugane (X: 8.5 Y: 14.2).

Pagos Notorious Monster Spawn Conditions

Use the Eureka Trackers to keep track of weather and respawn timers.
Night = 5:00PM to 5:00AM ET
Weather changes at 12:00AM, 7:00AM and 4:00PM ET

F.A.T.E.	Boss	Spawn Trigger	Location
Lv. 20 Eternity	The Snow Queen	Lv. 25 Yukinko	X: 22.0 Y: 29.0
Lv. 21 Cairn Blight 451	Taxim	Lv. 26 Demon of the Incunable (Night)	X: 24.0 Y: 26.5
Lv. 22 Ash the Magic Dragon	Ash Dragon	Lv. 27 Blood Demon	X: 30.0 Y: 30.0
Lv. 23 Conqueror Worm	Glavoid	Lv. 28 Val Worm	X: 32.5 Y: 27.5
Lv. 24 Melting Point	Anapos	Lv. 29 Snowmelt Sprite (Fog)	X: 30.0 Y: 26.0
Lv. 25 The Wobbler in Darkness	Hakutaku	Lv. 30 Blubber Eyes	X: 29.0 Y: 22.5
Lv. 26 Does It Have to Be a Snowman	King Igloo	Lv. 31 Huwasi	X: 17.0 Y: 16.0
Lv. 27 Disorder in the Court	Asag	Lv. 32 Wandering Opken	X: 11.0 Y: 11.0
Lv. 28 Cows for Concern	Surabhi	Lv. 33 Pagos Billygoat	X: 10.5 Y: 19.5
Lv. 29 Morte Arthro	King Arthro	Lv. 34 Val Snipper	X: 9.0 Y: 16.0
Lv. 30 Brothers	Eldertaur / Mindetaur	Lv. 35 Lab Minotaur	X: 13.5 Y: 18.5
Lv. 31 Apocalypse Cow	Holy Cow	Lv. 36 Elder Buffalo	X: 27.0 Y: 17.0
Lv. 32 Third Impact	Hadhayosh (Thunder)	Lv. 37 Lesser Void Dragon	X: 30.5 Y: 18.5
Lv. 33 Eye of Horus	Horus (Heat Waves)	Lv. 38 Void Vouivre	X: 26.0 Y: 20.0
Lv. 34 Eye Scream for Ice Cream	Arch Angra Mainyu	Lv. 39 Gawper	X: 24.5 Y: 24.5
Lv. 35 Cassie and the Copycats	Copycat Cassie (Blizzards)	Lv. 40 Ameretat	X: 22.0 Y: 14.0
Lv. 35 Louhi on Ice	Louhi	Lv. 39 Val Corpse (Night)	X: 36.0 Y: 19.0

Eureka Pyros

Speak to Rodney in Kugane (X: 8.6 Y: 14.2) to accept and complete the quest And We Shall Call It Pyros. Similarly to Pagos, we will be completing the quest line for Eureka Pyros which allows you to progress once you reach certain Elemental Levels. Your Elemental Level will be carrying over from Pagos. Attune with the Aethernet Shard in the starting area then speak to Krile in the starting area of Eureka Pyros to begin.

Logos Actions

Logos Actions are unlockable abilities that can be assigned to your Duty Action hotbar. These are custom skills and buffs that are not usually available to your class and are exclusive to Eureka zones.

Speak to all NPC's with quest markers over the heads to continue. Drake will give you a demonstration of the Logos Manipulator. Select the Paralyze L Logogram and select [Extract Meme] to unlock the Paralyze L Logos Action.

You'll now be able select it from the Logo Actions window to add it to your onscreen Duty Action hotbar. This will consume the Paralyse L from your Logos Actions so you will need to extract it again using the Logos Manipulator if you use up or exchange the action for another.

Logos Actions can easily be unlocked by appraising Logograms when speaking to Drake (X: 15.7 Y: 23.9). Once the Logograms are appraised, they will be converted the Mnemes which can be placed into the Logos Manipulator next to Drake to form Logos Actions. Some Logos Actions require up to three specific Mnemes so be sure to stock up on Logograms.

The Eureka Logogram Helper is essential to unlocking Logos Actions so use it to find out which combinations you need for which Logos Actions.

You can map out all of your obtained Logos Actions and currently held Logograms in the Helper to sync your in-game progress with the website.

The success rate of creating Logos Actions is 100% when fusing up to 3 Mnemes so the Eureka Logogram Helper will tell you exactly how many specific Mnemes you need to unlock all 50 Logos Actions.

You are free to purchase Logograms from the Market Board to unlock Logos Actions as quickly as possible or you can collect Logograms as you defeat enemies in the zone.

There are recommended Logos Actions to take with you into Eureka Pyros for leveling and farming Notorious Monsters, as the buffs granted are rather significant.

Full List of Logos Actions

You can only equip one "Wisdom" Logos Action which will function as a permanent stance while you are in Eureka.

The second Logos Action can be a reusable action or buff. The recommended Logos Actions when running solo are geared towards survivability, which will also allow you to pull more mobs at once. If you're running in a party, it is wiser to use Logos Actions that buff your damage dealt if there is a dedicated Tank.

You can equip and consume the Spirit of the Remembered Logos Action that will grant a one-time resurrection buff for 180 minutes without taking a Logos Action slot.

Tanks

Wisdom of the Guardian – Increases defence by 1,800 and maximum HP by 10%
Wisdom of the Indomitable – Increases defence by 2,000

DPS and Healers

Wisdom of the Platebearer – Increases defence by 150% and maximum HP by 50%
Wisdom of the Aetherweaver – Increases magic damage dealt by 60% (Healers only)

Actions

Bloodbath L – Converts a portion of damage dealt into HP.
Cure L II – Restores target's HP. Cure Potency: 12,000
Protect L – Increases the physical defence of target by 1,000

Pyros Quests

After speaking to all NPC's in the starting area, head to X: 27.7 Y: 27.1 and interact with the Confluence on the ground in the corner. Return to the starting area and speak to Krile.

At Elemental Level 38, after speaking to Krill you will need to speak to Drake (X: 15.7 Y: 23.9) then head to X: 18.6 Y: 30.6 and interact with the Promising Scrap on the ground behind the house. Return to the starting area and speak to Drake.

You'll now be able to create two Logos Actions that will function as a loadout.

Simply place the corresponding Mnemes in the Umbral Array for Duty Action 1 and Astral Array for Duty Action 2.

Only Logos Actions that are created together can be equipped together.

Speak to Krile then head to X: 23.8 Y: 17.0 via the Firing Chamber Aethernet Shard and interact with the Confluence on the ground. Return to the starting area and speak to Krile.

At Elemental Level 40, speak to Krile then head to X: 17.2 Y: 11.6 and interact with the Confluence on the ground. Return to the starting area and speak to Krile.

At Elemental Level 45, speak to Krile then speak to her again after the cutscene.

At Elemental Level 50, speak to Krile then head to X: 34.0 Y: 7.3 and interact with the Confluence on the ground. Return to the starting area and speak to Krile then head to X:14.5 Y: 37.6 and interact with the Destination on the ground. Return to the starting area and speak to Krile.

Congratulations on completing the quest line for Eureka Pyros. You'll now be able to enter the final area, Eureka Hydratos by speaking to Rodney near the Pier #1 Aethernet Shard in Kugane (X: 8.5 Y: 14.2).

Pyros Notorious Monster Spawn Conditions

Use the Eureka Trackers to keep track of weather and respawn timers.
Night = 5:00PM to 5:00AM ET
Weather changes at 12:00AM, 7:00AM and 4:00PM ET

F.A.T.E.	Boss	Spawn Trigger	Location
Lv. 35 Medias Res	Leucosia	Lv. 38-40 Pyros Bhoot (Night)	X: 27 Y: 26.5
Lv. 36 High Voltage	Flauros	Lv. 41 Thunderstorm Sprite (Thunder)	X: 29.3 Y: 29.3
Lv. 37 On the Non-existent	The Sophist	Lv. 42 Pyros Apanda	X: 32.0 Y: 31.5
Lv. 38 Creepy Doll	Graffiacane	Lv. 43 Valking	X: 23.5 Y: 37.0
Lv. 39 Quiet, Please	Askalaphos (Umbral Wind)	Lv. 44 Overdue Tome	X: 19.5 Y: 30.0
Lv. 40 Up and Batym	Grand Duke Batym	Lv. 44-45 Dark Troubador (Night)	X: 18.0 Y: 14.5
Lv. 41 Rondo Aetolus	Aetolus	Lv. 46 Islandhander	X: 10.0 Y: 15.0
Lv. 42 Scorchpion King	Lesath	Lv. 47 Bird Eater	X: 13.0 Y: 11.0
Lv. 43 Burning Hunger	Eldthurs	Lv. 48 Pyros Crab	X: 15.0 Y: 6.5
Lv. 44 Dry Iris	Iris	Lv. 49 Northern Swallow	X: 21.5 Y: 12.0
Lv. 45 Thirty Whacks	Lamebrix Strikebocks	Lv. 50 Illuminati Escapee	X: 22.0 Y: 8.0
Lv. 46 Put Up Your Dux	Dux (Thunder)	Lv. 51 Matanga Castaway	X: 29.0 Y: 9.0
Lv. 47 You Do Know Jack	Lumber Jack	Lv. 52 Pyros Treant	X: 30.0 Y: 11.5
Lv. 48 Mister Bright-eyes	Glaukopis	Lv. 53 Val Skatene	X: 31.5 Y: 15.0
Lv. 49 Haunter of the Dark	Ying-Yang	Lv. 54 Pyros Hecteyes	X: 11.5 Y: 34.0
Lv. 50 Heavens' Warg	Skoll (Blizzards)	Lv. 55 Pyros Shuck	X: 16.5 Y: 36.0
Lv. 50 Lost Epic	Penthesilea (Heat Waves)	Lv. 55 Val Bloodglider	X: 33.0 Y: 8.0

Eureka Hydratos

Speak to Rodney in Kugane (X: 8.6 Y: 14.2) to accept and complete the quest And We Shall Call It Hydratos. Similarly to Pyros, we will be completing the quest line for Eureka Hydratos which allows you to progress once you reach certain Elemental Levels. Your Elemental Level will be carrying over from Pyros. Attune with the Aethernet Shard in the starting area then speak to Krile and the other NPC's with quest markers in the starting area of Eureka Hydratos to begin.

Hydratos Quests

At Elemental Level 51, speak to Krile in the starting area then head to X: 20.3 Y:24.8 to speak to her again. Next, go to X: 25.7 Y: 30.7 and interact with the Pooled Aether. Return to X: 20.3 Y:24.8 and speak with Krile again.

At Elemental Level 54, go to X: 20.3 Y:24.8 and speak to Krile then head to X: 10.6 Y: 29.6 via the Unverified Research Aethernet Shard and speak to her again. Next, go to X: 6.5 Y: 15.7 and interact with the Pooled Aether after walking up the large stone structure. Return to X: 10.6 Y: 29.6 and speak to Krile again.

At Elemental Level 57, go to X: 10.6 Y: 29.6 via the Unverified Research Aethernet Shard and speak to Krile then head to X: 31.3 Y: 27.7 and speak to her again. Next, go to X: 30.8 Y: 14.4 and interact with the Pooled Aether. Return to X: 31.3 Y: 27.7 and speak to Krile again.

At Elemental Level 60, go to X: 31.3 Y: 27.7 and speak to Krile then head to X: 24.0 Y: 30.6 and speak to her again. Follow Krile by interacting with the Headquarters Entrance then speak with her two more times. Next, interact with the Scattered Tomes on the desk and talk to Krile once more.

After the cutscenes, speak to Krile or Ejika Tsunjika then return to the starting point and speak to Ejika Tsunjika or Krile.

Congratulations on completing the entire quest line for Eureka Hydratos, and Eureka as a whole.

Hydratos Notorious Monster Spawn Conditions

Use the Eureka Trackers to keep track of weather and respawn timers.
Night = 5:00PM to 5:00AM ET
Weather changes at 12:00AM, 7:00AM and 4:00PM ET

F.A.T.E.	Boss	Spawn Trigger	Location
Lv. 50 I Ink, Therefore I Am	Khalamari	Lv. 55 Xzomit	X: 11.0 Y: 25.0
Lv. 51 From Tusk till Dawn	Stegodon	Lv. 56 Hydatos Primelephas	X: 10.5 Y: 18.0
Lv. 52 Bullheaded Berserker	Molech	Lv. 57 Val Nullchu	X: 7.0 Y: 22.0
Lv. 53 Mad, Bad, and Fabulous to Know	Piasa	Lv. 58 Vivid Gastornis	X: 7.0 Y: 15.0
Lv. 54 Fearful Symmetry	Frostmane	Lv. 59 Northern Tiger	X: 6.0 Y: 26.0
Lv. 55 Crawling Chaos	Daphne	Lv. 60 Dark Void Monk	X: 25.0 Y: 19.0
Lv. 56 Duty-free	King Goldemar	Lv. 61 Hydatos Wraith (Night)	X: 25.0 Y: 17.0
Lv. 57 Leukewarm Reception	Leuke	Lv. 62 Tigerhawk	X: 32.5 Y: 26.5
Lv. 58 Robber Barong	Barong	Lv. 63 Laboratory Lion	X: 35.0 Y: 24.5
Lv. 59 Stone-cold Killer	Ceto	Lv. 64 Hydatos Delphine	X: 38.0 Y: 14.0
Lv. 60 Crystalline Provenance	Provenance Watcher	Lv. 65 Crystal Claw	X: 32.5 Y: 21.5

Eureka Relic Weapon Steps

Stage 1: Antiquated

To begin the Eureka Relic Weapon quest chain, you must obtain the Antiquated weapon as a reward completing your Stormblood Level 70 Class Quest.

After completing the quest, you can purchase the weapon repeatedly from the Calamity Salvager in Limsa Lominsa Upper Decks (X: 11.4 Y: 14.4) under [Purchase Job Specific Gear] -> [Purchase Lv. 70 Arms] for 1,000 gil.

Stage 2: Anemos (Eureka Anemos Lv. 3)

After completing the Eureka Anemos Elemental Level 3 quest step, you will unlock Gerolt who will allow you to trade in Protean Crystals for the Eureka Relic Weapons.

ffxivgillionaire ffxivbahamut ffxiv eureka anemos gerolt relic protean crystals

Protean Crystals are obtained by defeating regular enemies in Eureka Anemos.

You can also exchange Anemos Crystals for Protean Crystals by speaking to Gerolt in Eureka Anemos (X: 18 Y: 32.3).

Anemos Crystals are obtained by defeating Notorious Monsters in Eureka Anemos.

1 Anemos Crystal will give you 2-5 Protean Crystals.

ffxivgillionaire ffxivbahamut ffxiv eureka anemos gerolt relic anemos crystals

Once you have obtained enough Protean Crystals, speak to Gerolt to upgrade your weapon:

i335 Starter Weapon Upgrade (100 Protean Crystals)
i340 Starter Weapon +1 Upgrade (400 Protean Crystals)
i345 Starter Weapon +2 Upgrade (800 Protean Crystals)

Once you have obtained the +2 weapon, you can complete the final upgrade by obtaining 3 Pazuzu Feather.

You can obtain exactly 3 Pazuzu Feathers by completing Wail in the Willows with a Gold rating or you can purchase Pazuzu Feathers from the Expedition Birdwatcher at X: 19.0 Y:31.4 for 300 Protean Crystals each.

Once you have obtained the 3 Pazuzu Feathers, speak to Gerolt with your weapon unequipped to upgrade to the i355 Anemos Relic Weapon.

Stage 3: Elemental (Eureka Pagos Lv. 25)

Once you have spoken to Krile at Elemental Level 25 for the Eureka Pagos quests and obtained the i355 Anemos weapon, you'll be able to upgrade your weapon by speaking to Gerolt in Eureka Pagos (X: 4.3 Y: 25.0) and selecting [Augment Eureka weapon].

Gerolt will give you the Vitiated Aether Kettle which will bring up a bar in the UI in your Duty Menu.

ffxivgillionaire ffxivbahamut ffxiv eureka pagos gerolt relic frosted protean crystals

Your goal is to fill this bar (up to 9 stacks can be held at once) by defeating Notorious Monsters or regular mobs at or above your level then converting the accumulated Vitiated Aether to Frosted Protean Crystals at the Crystal Forge located at X: 6.0 Y: 21.5.

You'll need travel south from the Geothermal Studies Aethernet Shard then drop down a ledge at X: 8.9 Y: 21.5 to reach this location so make sure you are currently not in combat as you will likely die from the fall otherwise.

Just after the drop, there is also a sleeping Frozen Void Dragon that you will need to walk slowly past to enter the cave containing the Crystal Forge. You will also now receive Pagos Crystals from defeating Notorious Monsters.

You will need to obtain Frosted Protean Crystals and Pagos Crystals to upgrade your weapon:

i360 Pagos Weapon (5 Frosted Protean Crystals)
i365 Pagos Weapon +1 (10 Frosted Protean Crystals + 500 Pagos Crystals)
i370 Elemental Weapon (16 Frosted Protean Crystals + 5 Louhi'Ice)

You can obtain exactly 3 Louhi's Ice by completing the Louhi on Ice with a Gold rating or you can purchase Louhi's Ice from the Expedition Birdwatcher (X: 4.5 Y: 24.4) for 50 Pagos Crystals each.

Stage 4: Pyros (Eureka Pyros Lv. 35)

If you have obtained the i370 Elemental weapon, you'll be able to speak to Gerolt in Eureka Pyros (X: 15.3, Y: 23.6) after unlocking the Logos Manipulator.

You will need to unlock more Logos actions before you can upgrade the relic weapon as well as collect Pyros Crystals by defeating Notorious Monsters:

i375 Elemental Weapon +1 (150 Pyros Crystals + Unlock 10 Logos Actions)
i380 Elemental Weapon +2 (200 Pyros Crystals + Unlock 20 Logos Actions)
i385 Pyros Weapon (300 Pyros Crystals + 5 Penthesilea's Flame + Unlock 30 Logos Actions)

You can obtain exactly 3 Penthesilea's Flame by completing Lost Epic with a Gold rating or you can purchase Penthesilea's Flame from the Expedition Birdwatcher (X: 17.6 Y: 25.4) for 50 Pyros Crystals each.

You'll also be able to purchase Elemental Armour from the Expedition Artisan (X: 15.4 Y: 23.9) for 40 Pyros Crystals each once you have unlocked 50 Logos Actions.

Stage 5: Eureka (Eureka Hydratos Lv. 50)

If you have obtained the i385 Pyros weapon, you will be able to speak to Gerolt in Eureka Hydratos (X: 21.4 Y: 13.6) about the Hydratos Relic Weapon.

You will need to defeat Notorious Monsters to obtain Hydratos Crystals to upgrade your relic weapon:

i390 Hydratos Weapon (50 Hydratos Crystals)
i395 Hydratos Weapon +1 (100 Hydratos Crystals)
i400 Base Eureka Weapon (100 Hydratos Crystals)
i405 Eureka Weapon (100 Hydratos Crystals + 5 Crystalline Scale)

You can obtain exactly 3 Crystalline Scale by completing Provenance Watcher with a Gold rating.

There is a final optional upgrade to add Elemental stats to your i405 Eureka Relic Weapon that requires you to obtain 100 Eureka Fragments from the Baldesian Arsenal via the completion of I Don't Want to Believe, however this does not change the appearance of the Relic Weapon.