FFXIV Dawntrail Patch 7.3 Necron Boss Guide


So you've made it to Patch 7.3 of FFXIV Dawntrail, and now you're standing in front of Necron—the final boss of the Voidwalker Protocol raid tier. First off, congrats. That's no small feat. But now comes the hard part: figuring out how to not get obliterated by this multiverse-warping monstrosity.

If you've wiped a few dozen times, you're not alone. This boss is a serious wall if your group isn’t communicating, and the mechanics hit harder than a tankbuster on meth. That said, with the right strategy and some practice, Necron becomes totally manageable.


Quick side note before we dive in: if you're running low on gil for pots, repairs, or gearing up ahead of raid night, a lot of players I know (myself included) have used PVPBank to buy FFXIV Gil safely and quickly. Just use it smart—never during a patch spike.

Alright, let's get into the real Necron boss guide—from someone who's banged their head against this fight for over 40 pulls. Spoiler: this fight's got phases, layers, fake-outs, and a nasty enrage timer if you slack.

Who is Necron in FFXIV Dawntrail Patch 7.3?

If you're deep in the Dawntrail story, you already know Square went deep into the lore vault for this one. Necron is a manifestation of entropy and collapse, drawn from alternate timelines converging during the events of Patch 7.3.

He's not just a boss. He's a force of cosmic deletion—literally trying to erase the star's potential futures. His fight reflects that—distorting space, flipping mechanics mid-cast, and using time-bending effects.

You'll encounter Necron at the climax of the Memories of the Rift raid. And yeah—it earns that finale spot.

Necron Boss Fight Overview

Location: Twilight Rift (Duty Finder: Raid – Memories of the Rift 4)
Duty Type: 8-player Raid
Recommended ilvl: 675+
Roles Required: 2 tanks, 2 healers, 4 DPS
Average Clear Time: ~13 minutes
Wipe potential: Very high if uncoordinated

Necron Boss Mechanics by Phase

Let's break down the fight phase by phase. You'll want to memorize these because Necron punishes hesitation and greed like no other.

Phase 1 – The Collapse Begins

Mechanics Introduced:

  • Graviton Burst: A wide AOE circle on a random DPS. Spread out to avoid overlap.

  • Entropy Overload: A tank buster that also cleaves. Tanks need to separate.

  • Void Implosion: Random player gets a black hole that sucks others in. Everyone needs to GTFO.

  • Phase Shift: Swaps the arena's safe zones—watch the indicators.

Pro Tips:

  • Assign cardinal positions early for AOE spreads.

  • Healers—prep shields pre-Graviton.

  • Tanks swap every overload or you'll get melted.

At 75 percent HP, Necron casts Universal Collapse, transitioning the fight to Phase 2.

Phase 2 – Time Fracture

This phase introduces time-based mechanics—your visual awareness needs to be on point.

New Mechanics:

  • Reverse Countdown: Players get numbered debuffs (1–4). Explodes in countdown order. Spread and resolve one at a time.

  • Temporal Echo: Clones of Necron appear and mimic past mechanics.

  • Void Fracture: Arena breaks into segments. Safe zones rotate.

  • Winds of Delay: Delayed AOE that triggers later than usual—don’t dodge too early.

Veteran Advice:

  • Use party finder tools like markers to set spread spots for Reverse Countdown.

  • Avoid stacking too soon after Void Fracture—you’ll bait your party into unsafe zones.

  • Macro callouts can save lives—especially for Temporal Echo.

At 50 percent, Necron dips out with a cutscene, and Phase 3 begins after a 15-second DPS check.

Phase 3 – Multiverse Collapse

This is the spiciest part of the Necron fight. You’ll deal with alternate reality Necron clones, altered mechanics, and terrain hazards.

Mechanics Include:

  • Mirror Void Necron (Clone): Appears across from original. Casts mirrored mechanics.

  • Inverted Tankbusters: Healers now take tank buster-style damage. Tanks must intercept with mitigation tools.

  • Dual Collapse: Double-wide arena AOE with one safe line. Think like Titan Extreme.

  • Fate Unwritten: Players receive unique mechanics based on their job role. Tanks may need to absorb projectiles, DPS might have to dodge extra AOEs.

Group Tips:

  • Stack mitigation cooldowns for Inverted Busters. Don’t panic if healers drop once—it’s recoverable with quick res.

  • Keep comms open for Fate Unwritten—it's different every run, and solo reaction isn't enough.

  • Don't ignore the clone’s cast bar—mirror mechanics kill silent groups.

Final Phase – Collapse Absolute (Enrage Phase)

Necron enters a rage state below 15 percent. You have 90 seconds to finish him off or get wiped by Collapse Absolute.

New Mechanic:

  • Entropy Surge: All players take ticking damage until the end. Constant healing required.

  • Memory Erasure: Random player is targeted with memory wipe debuff—if not dispelled in time, they can’t act for 15 seconds.

  • Black Starfall: AOEs rain from the sky, with no pattern. Pure reaction test.

Key Advice:

  • Save LB3 for healing if things go sideways. Otherwise, use it to push final DPS burn.

  • Assign a dedicated Esuna / Dispeller for Memory Erasure.

  • Ignore rezzing unless it’s your healer—every second counts.

Party Composition Tips for Necron

Certain job abilities can trivialize parts of the Necron fight.

Tank Suggestions:

  • Dark Knight – Great for mitigating tank busters with Blackest Night

  • Gunbreaker – Short cooldowns help during Inverted Busters

  • Paladin – Bring extra healing with Clemency if your party is struggling

Healer Suggestions:

  • Sage – Top pick. Eukrasian Prognosis is a shield lifesaver here

  • White Mage – Benediction is clutch during Collapse Absolute

  • Astrologian – Draw balance for big DPS boost in burn phase

DPS Suggestions:

  • Ranged Phys (Dancer/Bard): Good for mobility during Void Implosion

  • Red Mage: Clutch res and DPS

  • Monk: Burst phases are tight—Monk excels in uptime windows

Best Consumables and Prep Before the Fight

You’ll want to prep properly for the Necron fight, especially in Savage or high-tier mode.

Recommended Buffs:

  • HQ Food (Vitality and Determination)

  • Tinctures of Mind / Strength depending on role

  • Max Potions for emergency healing

Pro Tip: Set your return point to the Twilight Rift so you can get back fast after wipes.

Necron Savage (Optional Section)

For the hardcore raiders—yes, there is a Savage version of Necron. Here's what changes:

  • Reverse Countdown now overlaps with Void Implosion

  • Memory Erasure affects two players

  • Mirror Necron casts simultaneous mechanics, not mirrored—massive chaos

  • Enrage timer shortens to 75 seconds

Expect higher gear checks, stricter rotation demands, and no room for recovery if a player dies early.

Final Thoughts on the Necron Fight in Patch 7.3

Necron is one of those fights that really sticks with you. It's a true test of teamwork, awareness, and reaction, with some of the best-designed mechanics we’ve seen since E8S or The Epic of Alexander.

For newer players, it’ll feel overwhelming at first—but that’s okay. Study, wipe, learn, and adapt. Necron rewards effort and punishes autopilot play. Once you beat him, you’ll feel like an actual legend.

And again, if you ever hit a wall because of gear, pots, or gil issues, don’t be afraid to visit PVPBank to buy FFXIV Gil—just use your head, stay safe, and never let gear be the thing holding you back.

TL;DR – FFXIV 7.3 Necron Boss Overview

Phase 1: Graviton Burst, Tankbusters, Phase Shift
Phase 2: Reverse Countdown, Time Echoes, Rotating Safe Zones
Phase 3: Mirror Mechanics, Inverted Roles, Fate Unwritten
Final Phase: Entropy Surge, Memory Erasure, Chaos AOEs
Enrage: 90-second window to finish or get wiped

Need help building a macro guide for your static? Want this converted to a printable PDF cheat sheet? I got you—just let me know.

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