FFXI Blue Mage Dual Wield Guide: /NIN vs Spell Traits

Blue Mage Dual Wield is one of those FFXI topics that sounds simple at first, then gets confusing once you mix subjobs, spell traits, and Job Point gifts.

This guide focuses on one practical question: should BLU use /NIN, or is it better to get Dual Wield from blue magic traits?

TL;DR

• While leveling, /NIN is the easiest answer. It reaches useful Dual Wield tiers much faster than spell traits.
• At level 99, spell-trait Dual Wield becomes much more attractive. Blue magic can reach higher tiers than subjobs can.
• At 1,200 Job Points, BLU spell traits become especially strong. The Job Trait Bonus gifts effectively raise your equipped blue-magic traits by two tiers total.
• Do not stack Dual Wield blindly. Your ideal amount still depends on your haste setup.

How Blue Mage Gets Dual Wield

BLU has two ways to access Dual Wield:

1. From a support job such as /NIN or /DNC
2. From blue magic spell traits

These two sources do not stack. If you have both, the higher tier is the one that matters.

1) Dual Wield from a Support Job

In practice, the real support-job choices are /NIN and /DNC. /THF technically has Dual Wield, but BLU cannot reach the required support-job level for it to matter.

If your only goal is to get functional Dual Wield as early as possible, /NIN wins.

2) Dual Wield from Blue Magic Traits

BLU can also unlock Dual Wield by setting certain blue magic spells.

Dual Wield activates at 8 trait points, so BLU can first access it from spell traits at level 80.

/NIN or Spell Traits: Which Is Better?

Looking at tier progression

This is the core tradeoff:

• Before level 99: /NIN gets you useful Dual Wield much earlier.
• At level 99 and beyond: spell-trait Dual Wield scales further, while subjob Dual Wield stops.

The Blue Magic Point cost

The downside is cost. If you set every Dual Wield spell for the maximum possible trait value, you spend 26 blue magic set points.

At level 99, that is roughly one third of your total 80 set points.

That sounds expensive, but the good news is that these are not all “dead” spells. Depending on your content and build, several still have real value beyond the trait itself.

Why the 100 JP and 1,200 JP gifts change everything

The real turning point is BLU’s Job Trait Bonus gifts.

At 100 Job Points and again at 1,200 Job Points, BLU gets a bonus that raises job traits gained from equipped blue magic.

In plain English: if your spell set gives you Dual Wield I, those gifts can push it up by two more tiers total.

That means a very small spell investment can become much stronger than it looks on paper.

For example, a minimal setup such as Delta Thrust + Barbed Crescent costs only 4 set points total. That is enough to activate Dual Wield from spell traits, and at 1,200 JP it effectively functions as Dual Wield III.

This is why endgame BLU players often prefer spell-trait Dual Wield over /NIN: it frees the support job slot for something else while still giving strong Dual Wield tiers.

My Recommendation

• Leveling or pre-99: Use /NIN. It is faster, easier, and more efficient.
• Level 99 without many Job Points: Mix and match. Spell-trait Dual Wield becomes viable, but /NIN is still convenient.
• Level 99 with 1,200 JP: In many builds, spell-trait Dual Wield is the better long-term answer because it can outperform subjob Dual Wield and expand your support-job options.

That said, there is no single “always correct” setup.

Some situations still favor /NIN or /DNC for reasons beyond Dual Wield alone, so think in terms of the whole build, not just this one trait.

Also, more Dual Wield is not automatically better. Once your haste setup is accounted for, extra Dual Wield can lower TP per hit without making you swing faster, so tune it to your actual gear and buffs.

Related BLU Guides

If you want the bigger BLU picture, start here:

• FFXI Blue Mage Ultimate Guide (2026)
• More FFXI Strategy & Guides

Legal

FINAL FANTASY XI is a trademark of SQUARE ENIX. This is an unofficial fan guide based on gameplay testing and community-verified mechanics. Numbers and best practices may change with future updates.