What is a Unique MOD in Echoes of Aincrad?

A Unique MOD is a named passive ability permanently attached to a specific piece of gear. Every weapon, every armor slot and every shield has exactly one, and it never changes — Steel Sword always carries Slash Recovery, Saint's Armor always carries Auto-Recovery. Unlike EX-Mods, you cannot add, remove or swap a Unique MOD. Choosing the gear is choosing the MOD.

What is the difference between a Unique MOD and an EX-Mod?

They are three separate layers on the same piece of gear. The Unique MOD is the fixed named passive that comes with the item and can never be changed. EX-Mods are the four slots you fill yourself through weapon synthesis at the Smithy, and they can be re-fused. The randomized bonus effect is a third layer rolled when you craft the item, which is why the same blueprint crafted twice can produce two different results.

Which Unique MODs are actually bad in Echoes of Aincrad?

Several Unique MODs are pure downsides. Heavyweight on the Annealed Sledgehammer reduces normal attack speed. Weight of the Dodge on the Guardian Jacket shrinks your dodge invincibility window. Isolation on the Iron Hatchet reduces Support SP gains. Fast Master on the Iron Tooth makes guarding impossible outright, and Stamina Recession on the Wild Edge lowers your maximum stamina. Scrap Shield raises your ATK but increases the damage you take. Read the MOD text before you equip a higher-DEF piece — the raw stat gain is often not worth it.

Can you reroll a Unique MOD?

No. The Unique MOD is fixed to the item and identical on every copy. What you can reroll is the randomized bonus effect that is applied when the item is forged — craft the same blueprint again with fresh materials and the bonus rolls anew. Players chasing a perfect piece farm materials and re-forge repeatedly, keeping the Unique MOD they wanted and rolling the secondary line until it lands.

What is the best Unique MOD for a beginner?

Auto-Recovery on Saint's Armor. It restores a portion of the damage you take over time and heals faster the lower your HP goes, which directly reduces how often you burn Healing Crystals. It is craftable as soon as you reach Floor 2 via the Cliffside Marvel blueprint, costs 1,500 Col plus common materials, and comes on a 25 DEF chest when most gear at that point sits at 15.

Do Unique MODs stack with EX-Mods?

Yes. They are independent systems and both apply at once. A Ragefang Gauntlets user running the Power Sword Unique MOD (more Sword Skill damage, higher SP cost) can pair it with Stamina Reduction EX-Mods to offset the SP tax. The strongest builds in the game are built by picking a Unique MOD with a drawback and then patching that specific drawback with EX-Mod slots.

Are Unique MODs the same thing as PC mods?

No — the two use the same word for completely different things. A Unique MOD is an in-game passive printed on a piece of gear: every weapon, armor slot and shield has exactly one, it is identical on every copy, and it can never be changed, removed or rerolled. A PC mod is a third-party file the community installs into the Steam version through the UE4SS framework to change things like QoL, visuals or map access. Echoes of Aincrad is one of the few games where both exist at once, so searching for the word mods can land you on either. If you were looking for PC mods rather than gear passives, see the dedicated Echoes of Aincrad PC mods guide for what is available and how to install it.

Gear Systems·Updated October 2026

Unique MODs Explained

Every weapon, every armor slot and every shield in Aincrad ships with a Unique MOD — a named passive welded to the item that you can never change, remove or reroll. Some of them are build-defining. A surprising number of them are outright downgrades. This page lists what each one actually does, which ones are traps, and how the Unique MOD layer sits on top of the randomized craft roll and your four EX-Mod slots.

Echoes of Aincrad equipment and Smithy crafting screen showing weapon stats — One Item, Three Layers
The equipment panel shows a Unique MOD, a randomized bonus and four EX-Mod slots. Only two of those three are yours to control.

Unique MOD vs Bonus Effect vs EX-Mod

The game calls three different things “mods” and never clearly separates them. This is the single most common source of gear confusion in Echoes of Aincrad, so pin it down before reading any list below.

Unique MOD

Fixed

The named passive printed on the item. Baked in at design time, identical on every copy, impossible to change. This is the layer that decides what a piece of gear is for.

Example: Saint's Armor → Auto-Recovery

Randomized Bonus

Rerollable

Rolled the moment the Smithy forges the item. Two identical blueprints crafted back to back can produce different bonuses — this is why material farming matters for endgame gear.

Example: Same blueprint, two different rolls

EX-Mods

Player-slotted

Four slots you fill yourself through weapon synthesis. Fully under your control, re-fusable at any time, and the layer you use to patch whatever your Unique MOD is bad at.

Example: Attack +35, Stamina +35, Sword Skill Damage

The Trap MODs — Read Before You Equip

Not every Unique MOD is a bonus. Six of them are net negatives, and because the equipment screen sorts by DEF and ATK rather than by MOD quality, it is very easy to upgrade yourself into a worse character.

MOD	Gear	What It Does	Verdict
Heavyweight	Annealed Sledgehammer	Reduces normal attack speed	A straight nerf on a weapon class that is already slow. Only defensible if your entire kit runs on Sword Skills rather than light-attack chains.
Fast Master	Iron Tooth (Dagger)	Increases normal attack speed, but makes it impossible to guard	The single riskiest MOD in the game. Viable on a pure dodge build, suicidal in Death Game Mode where one mistimed roll ends the save file.
Weight of the Dodge	Guardian Jacket	Reduces the invincibility window of dodging	Shrinks the i-frames your survival depends on. The DEF on the jacket does not compensate — pair it with a shield build or skip it.
Isolation	Iron Hatchet	Reduces Support SP gains	Starves the resource your partner interactions run on. Actively hostile to Switch Mode play.
Stamina Recession	Wild Edge	Reduces maximum stamina	Less stamina means fewer dodges, guards and sprints. A prologue-tier weapon you should replace at the first opportunity.
Scrap Shield	Scrap Shield	Increases ATK, but also increases damage taken	A shield that makes you squishier is a contradiction. Only for speedrun-style aggression on Normal difficulty.

All Weapon Unique MODs

Grouped by weapon type, with the quest or source that unlocks each blueprint. Weapon MODs trend toward offence and resource generation — the recurring themes are Sword Skill cooldowns, SP refunds, and bonus damage tied to a specific action such as a dodge, a parry or a Crush Attack.

One-Handed Sword

Weapon	Unique MOD	Effect	Source
Shortsword	Last Breath: SP	Bonus ATK damage on the final hit of a normal combo, plus SP recovery	Prologue
Bronze Sword	Leaps and Bounds	Boosts Jump Attack and Sprint Attack damage	Prologue
Steel Sword	Slash Recovery	Increases Slash damage; dealing Slash damage restores all SP types	Iori's Request
Anneal Longsword	Sword Concept	Reduces Sword Skill cooldown when the skill damages an enemy	Within the Shadows
Annealed Blade	Basic Sword Art	Faster normal attacks; each normal hit stacks ATK and DEF up to five times	The Violet Fencer I
Proto-Elucidator S	Blade Pursuit	Bonus ATK-scaled damage after activating a Sword Skill	Ultimate Edition

Rapier

Weapon	Unique MOD	Effect	Source
Bronze Rapier	After-Attack	Bonus ATK damage on the next attack following a Sword Skill	Prologue
Steel Rapier	Contract of Threes	Bonus damage on the third hit inside a window; restores stamina	Prologue
Wind Fleuret	Vengeful Dodges	Widens the dodge invincibility window and adds ATK-scaled dodge damage	The Violet Fencer I
Grimfoil	Parry Payback	Temporary damage boost after a successful counter or parry	Summons
Obsidian Saber	Rage Boost	Short ATK spike the moment a Sword Skill is launched	Onward to Tolbana
Proto-Elucidator R	Life Drain	Restores HP proportional to damage dealt	Ultimate Edition

Dagger

Weapon	Unique MOD	Effect	Source
Sleek Knife	Sprinter's Rage	Temporary sprint speed boost after a Sword Skill	Prologue
Steel Knife	Agility Blast	AGI-scaled bonus damage on the third hit inside a time limit	Prologue
Annealed Dagger	Last Breath: Vitality	Bonus damage on the combo finisher plus temporary stamina reduction	Within the Shadows
Iron Tooth	Fast Master	Faster normal attacks — but guarding becomes impossible	The Violet Fencer I
Mithril Dagger	Saintly Speed	Lower sprint stamina cost; Sprint Attacks gain ATK-scaled damage	Onward to Tolbana
Assassin's Knife	Poison Bite	Applies poison stacks; bonus damage vs poisoned foes scales with INT	Lord of the Plains

Mace

Weapon	Unique MOD	Effect	Source
Bronze Rod	Pursuit	Temporary ATK boost whenever a nearby enemy is knocked down	Prologue
Steel Hammer	Vertigo Attack	Applies daze on hit; restores Support and Combo SP near dazed enemies	Iori's Request
Annealed Sledgehammer	Heavyweight	Reduces normal attack speed	Within the Shadows
Annealed Rod	Fellowship	Grants Support SP and Combo SP when a Sword Skill deals damage	The Leone Trading Company
Proto-Elucidator M	Enhanced Pursuit	ATK-scaled bonus on Jump, Sprint and Crush Attacks	Ultimate Edition

Two-Handed Sword

Weapon	Unique MOD	Effect	Source
Greatsword	Last Breath: Greatsword	Bonus combo-finisher damage and empowers the next Sword Skill	Prologue
Bastard Sword	Crush Surge	Temporarily boosts the next attack after a Crush Attack	Prologue
Decapitator	Spirit Leap	Sword Skill damage up after a successful parry; cuts skill cooldowns	The Violet Fencer I
Corundum Claymore	Slashing High	Temporary ATK boost when activating a Slash attack	The Leone Trading Company
Final Judgement	Sparking Engine	Flat bonus damage	Summons
Proto-Elucidator TS	Triple Condition	Empowers the next Sword Skill after three consecutive uses	Ultimate Edition

Two-Handed Axe

Weapon	Unique MOD	Effect	Source
Bronze Axe	Power Down	Higher knockdown chance on normal attacks; STR-scaled finisher damage	Prologue
Steel Axe	Downed Attack	Increases damage dealt to downed enemies	Prologue
Iron Hatchet	Isolation	Reduces Support SP gains	The Violet Fencer I
Taurus Axe	Iron Will	Greater resistance to fear	The Violet Fencer I
Steel Hatchet	Heavy Fog	ATK-scaled bonus on Heavy Attacks; applies daze stacks	The Leone Trading Company
Proto-Elucidator TA	Titan Strength	Raises Crush Attack down rate and adds STR-scaled damage	Ultimate Edition

Armor Unique MODs by Slot

Chest pieces carry the survivability MODs, gloves carry the Sword Skill economy MODs, and legs and boots carry the movement MODs. Because you fill four armor slots at once, this is where most of your passive budget actually lives — a well-chosen armor set changes a run more than a weapon swap does.

Armor	Slot	Unique MOD	Effect	Source
Saint's Armor	Chest · 25 DEF	Auto-Recovery	Restores a portion of damage taken over time; heals faster at low HP	Cliffside Marvel chest blueprint · 1,500 Col
Soldier's Mail	Chest	Recovery Boost	Healing Crystals restore more HP and grant temporary DEF	Iori's Request
Earthly Jacket	Chest	Fearless	Raises DEF near elites and bosses, and reduces damage taken from them	Taming the Wilderness side quest
Guardian Jacket	Chest	Weight of the Dodge	Reduces the invincibility window of dodging	Lord of the Plains side quest
Thirteen Ordeals	Chest	Blessed Recovery	Regenerates HP below a threshold — once per quest only	The Lost Log side quest
Iron Bangles	Gloves · 8 DEF	Master of Slashing	Slash damage up and easier to activate	Iori's Request · needs Ark access
Ragefang Gauntlets	Gloves · 10 DEF	Power Sword	Sword Skill damage up, but SP consumption rises by a set percentage	A Tasteless Hobby side quest
Sleek Gloves	Gloves · 10 DEF	Reduced Activation	Lowers the SP required to activate Sword Skills	Floor 2 Smithy blueprint
Night Steel Gauntlets	Gloves · 10 DEF	Recovery Rush	Temporary normal attack speed boost whenever HP is recovered	Mid Floor 2 Smithy
Dark Leather Pants	Legs	Energetic	Increases maximum stamina	The Heifer Strikes Back side quest
Journey Pants	Legs · 15 DEF	Dodge Guard	Temporary DEF and status resistance boost after dodging	Smithy blueprint
Shadowless Pants	Legs · 15 DEF	Shadow Step	Turns dodges into teleports, but each one consumes SP	Late Floor 2 blueprint
Dryadic Leggings	Legs · 20 DEF	Spirit Exchange	Restores stamina whenever SP is consumed	Late-game blueprint
Ranger Boots	Boots	Agility Plus	Increases AGI	Summons main quest
Adventurer's Boots	Boots	Sprint Force	Increases Sprint Attack damage	Smithy blueprint
Metal Knight Boots	Boots · 17 DEF	Momentum	Stacks with distance travelled; the next hit spends all stacks for ATK-scaled bonus damage	Floor 2 blueprint
Nightstalkers	Boots · 18 DEF	Smoke Veil	Perfect dodges create a blindness-inflicting smoke cloud	Late Floor 2 blueprint
Hero's Boots	Boots · 30 DEF	Hero's Stride	Increases EXP gain; with the full Hero's Attire, cuts stamina and SP costs and boosts SP gain	Post-game
Daring Armguards	Gloves	Crush Master	Increases Crush Attack and charged Sword Skill damage	A Duelist's Dilemma side quest

Shield Unique MODs

Only the One-Handed Sword, Rapier and Mace can equip a shield, and unlike other armor a shield provides no base DEF value of its own — its entire contribution is the Unique MOD. That makes shield choice a pure MOD decision, and it is the one slot where picking wrong costs you nothing but picking right can transform a fight.

Shield	Unique MOD	Effect
Round Shield	Parry Amplifier	Boosts Parry Slash damage and grants temporary DEF after one lands
Wood Shield	Light Guard	Reduces the stamina cost of guarding
Foresight Shield	Parry Mend	Restores HP on a successful Parry
Veil Shield	SP Bastion	Restores SP on guard; Sword Skills hit harder while SP is above half
Heart and Soul	Last Stand	Reduces damage taken while HP is at 50% or lower
Ohg's Hatred	Provoking Guard	Pulls nearby enemy attention on a successful guard and grants brief invincibility
Dark Xerxes	Thorned Guard	Reflects DEF-scaled damage back at the attacker on a successful guard
Saints Mirror	Dazing Guard	Applies daze stacks to the attacker for each successful guard
Gordian Shield	Bulwark	Increases DEF, but raises the stamina cost of dodging
Scrap Shield	Reckless Edge	Increases ATK, but also increases damage taken
Proto-Elucidator SH	Guard Charge	Restores SP after guarding an attack

Best Unique MOD Combinations by Build

Unique MODs are strongest when several of them fire off the same input. Pick a trigger — dodge, parry, Crush Attack, Sword Skill — and then choose gear whose passives all key off it. Here are five combinations that hold together.

Beginner / Death Game Survival

Saint's Armor (Auto-Recovery) · Round Shield (Parry Amplifier) · Steel Sword (Slash Recovery)

Every piece here refunds a resource. Auto-Recovery reduces Healing Crystal burn, Parry Amplifier turns defence into damage, and Slash Recovery keeps SP topped up so you are never stuck holding a skill you cannot pay for. This is the loadout that survives a permadeath run.

Sword Skill Nuker

Ragefang Gauntlets (Power Sword) · Anneal Longsword (Sword Concept) · Sleek Gloves alternative (Reduced Activation)

Power Sword raises Sword Skill damage at the cost of SP, and Sword Concept cuts cooldowns whenever a skill connects. The SP tax is real — either run Sleek Gloves instead of Ragefang while you learn the fight, or patch it with Stamina Reduction EX-Mods.

Break & Knockdown

Daring Armguards (Crush Master) · Bastard Sword (Crush Surge) · Steel Axe (Downed Attack)

Crush Master raises Crush Attack damage, Crush Surge empowers whatever you throw immediately after, and Downed Attack cashes in the knockdown. Stack all three and the Break Marker stops being a wall — it becomes your damage window.

Dodge Assassin

Wind Fleuret (Vengeful Dodges) · Nightstalkers (Smoke Veil) · Journey Pants (Dodge Guard)

Three MODs that all trigger off the same button. Vengeful Dodges widens the i-frames and adds damage, Smoke Veil blinds everything around a perfect dodge, and Dodge Guard hands you DEF and status resistance on the way out. Never pair this with Weight of the Dodge.

Partner Synergy

Annealed Rod (Fellowship) · Steel Hammer (Vertigo Attack) · Ohg's Hatred (Provoking Guard)

Fellowship and Vertigo Attack both feed Support and Combo SP, which is the currency Switch Mode and combo finishers run on. Provoking Guard lets you hold aggro deliberately instead of accidentally. Avoid Isolation on any piece in this build.

Rerolling the Randomized Bonus

You cannot change a Unique MOD, but you can change the bonus effect rolled when the Smithy forges the item. Crafting the same blueprint twice produces two different secondary rolls, which means a piece you intend to carry across several floors is worth forging repeatedly.

1.Pick the Unique MOD you want first — that decides the blueprint, and it is the part you cannot influence.
2.Beeline every Safe Area in the region before hunting the blueprint. Activating a Safe Area reveals all chests and Seals on the map.
3.Stock the access tools the chest requires: Bomb Stones and Flame Stones for blocked paths, a Blinking Talisman for gap jumps, and an Ark clear for any sealed route.
4.Farm the material stack in bulk. Re-forging is gated by materials and Col, not by any cooldown — Tempered Steel and Rare Cloth Scrap are the usual bottlenecks.
5.Forge, read the bonus line, and forge again if it is not the one you want. The Unique MOD is identical every time.
6.Stop rerolling once the piece is a floor or two from being replaced. Save the materials for the gear that will carry you into the post-game instead.

Six Mistakes That Waste a Unique MOD

Mistake	Why It Happens	Fix
Equipping the higher-DEF piece automatically	Several high-DEF items carry actively harmful Unique MODs — Guardian Jacket trades i-frames for armour	Read the MOD line before the DEF number. A 10 DEF piece with the right passive beats a 15 DEF piece that shortens your dodge.
Confusing Unique MODs with EX-Mods	Both are called 'mods' in-game and both appear on the same equipment panel	Unique MOD = fixed, named, one per item, cannot be changed. EX-Mods = four player-filled synthesis slots. Plan the Unique MOD first, then patch its weakness with EX-Mods.
Crafting a blueprint once and moving on	The bonus effect on crafted gear is randomized per forge, not fixed	If a piece is going to carry you for several floors, farm the materials and re-forge it a few times. The Unique MOD stays, the secondary roll improves.
Running Fast Master in Death Game Mode	It removes your ability to guard entirely in a mode where a single death deletes the save	Keep Fast Master for standard-difficulty dagger runs. In permadeath, the guard button is worth more than the attack speed.
Stacking two MODs that fight each other	Wind Fleuret's Vengeful Dodges and the Guardian Jacket's Weight of the Dodge modify the same invincibility window in opposite directions	Group your MODs by trigger — dodge, parry, Crush, Sword Skill — and make sure everything in a build fires off the same action.
Ignoring Support SP MODs because the number looks small	Support and Combo SP drive partner interactions and combo finishers, not raw damage	Fellowship and Vertigo Attack quietly raise your total output more than a flat ATK line, because they let the partner act more often.

Build Around the MOD, Not the Stat Line

The Unique MOD decides what a piece of gear is for. EX-Mods decide how well it covers its own weakness.

EX-Mods Guide →Armor Guide →Blueprint Locations →

Frequently Asked Questions

What is a Unique MOD?

A named passive permanently attached to a specific piece of gear. Every weapon, armor slot and shield has exactly one and it never changes — Steel Sword is always Slash Recovery, Saint's Armor is always Auto-Recovery. Choosing the item is choosing the MOD.

How is it different from an EX-Mod?

EX-Mods are the four synthesis slots you fill yourself at the Smithy and can re-fuse at will. The Unique MOD is fixed. A third layer — the randomized bonus effect — is rolled when the item is forged, which is why the same blueprint can produce different results.

Which Unique MODs should I avoid?

Heavyweight (slower attacks), Weight of the Dodge (shorter i-frames), Isolation (less Support SP), Stamina Recession (lower max stamina), Scrap Shield (more damage taken) and Fast Master (cannot guard at all). Fast Master in particular should never be worn in Death Game Mode.

Can I reroll a Unique MOD?

No — only the randomized bonus effect rerolls. Farm materials and re-forge the same blueprint to chase a better secondary line; the Unique MOD comes out identical every time.

What is the best early Unique MOD?

Auto-Recovery on Saint's Armor. Grab the blueprint during Cliffside Marvel on Floor 2, craft it for 1,500 Col plus a Selenite Ingot, three Rare Cloth Scrap and two Red Core, and you get a 25 DEF chest that heals you passively when most gear at that stage sits at 15 DEF.

Do shields have Unique MODs too?

Yes, and it is all they have — shields grant no base DEF, so the MOD is the entire item. Only One-Handed Swords, Rapiers and Maces can equip one, which is a hidden argument in favour of those three weapon types.

Are Unique MODs the same as PC mods?

No. A Unique MOD is the gear passive covered on this page; a PC mod is a community file installed into the Steam build through UE4SS. Both exist in Echoes of Aincrad, so the word mods points at two separate systems — only the gear version is covered here.

← Weapons Smithy Guide →Best Builds →Materials Farming →PC Mods →