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Lowers an enemy's defense and gradually deals Light elemental damage.


Spell cost: 7 MP
Spell element: Light
Target: Enemy.
Magic skill: Enfeebling

Note: Automatons learn this spell automatically once they have the requisite magic skill. They do not need to use a scroll.


Casting Time: 1 second
Recast Time: 5 seconds

Other Uses[edit]

Resale Price: ???~??? gil

How to Obtain[edit]

  • Automatically given if you start as Red Mage (Note: This scroll is Exclusive).
Auction House Category: Scrolls > White Magic ( )


Price: 82 - 95 gil
Name Location Type
Kususu Port Windurst (H-8) Standard Merchant
Regine Port San d'Oria (J-8) Standard Merchant
Sororo Bastok Markets (H-5) Standard Merchant

Other Information[edit]

Effect Duration
1 Minute (60 Seconds)
DOT damage 1hp/tic
  • Initial damage soft caps at 2.
Enemy Defense Down effect
Defense is reduced by 10%.
This effect cannot be resisted except with Magic Shield.
Dia / Bio Priority 
Dia and Bio do not stack.
Bio III > Dia III > Bio II > Dia II > Bio > Dia
Example: If Dia is cast, and Bio is cast afterwards, Dia will be overwritten. If Dia II is then cast, Bio will be overwritten. If Bio II is cast, Dia II will be overwritten.
Note: This is not necessarily the case for player characters who have been hit with both spells.
Useful Macros
/ma "Dia" <t> Casts onto current target
/ma "Dia" <bt> Casts onto last target claimed by party
/ma "Dia" <stnpc> Allows you to select a target from available NPCs
The Meaning of Dia
The spell "Dia" comes from the Japanese release of Final Fantasy I. In the original localization of the game it was renamed as "Harm", "Hrm2", and so on. It is an abbreviation of "Dispel Undead" with the "U" in undead being an "A" in Japanese. While names in Final Fantasy XI are influenced by english, it was left as Dia to connotate with "daylight"(as per Latin-based languages) because daylight is often depicted as harmful to the undead. As such, in the localization of the FF1 remakes Harm was changed back into Dia (and animated as a blast of sunlight in graphically advanced remakes of the game to follow the theme).
Despite seeming to be a truncation of the word "diamond" in English, in Japanese the spell "Dia" bears no relationship to diamonds and is spelled and pronounced ディア(dia /diä/, "Dee-ah"), not ダイヤ(daiya /däɪjä/, "Dye-ah").
It is worth noting that Dia was initially a Divine Magic spell, but was changed to Enfeebling Magic. The counterpart, Bio, is still a Dark Magic spell. This is why Red Mage has a Divine skill and no Divine spells (Red Mage had Flash originally as well). (it is not because they might want to use divine spells from a sub job)


  • Use of Dia in a party should be balanced with the use of Bio as the two spells overwrite each other.
  • Use of Dia in Campaign Battles counts toward Elemental Magic Damage in terms of rewards calculation, despite its primary use being that of enfeebling. The reward is based solely on the initial damage reported in the log, and not on the overall damage-over-time.

v  d  e
Magic of Vana'diel: Enfeebling Magic

Addle III  — Bind — Blind III — Dispel — DistractIIIII — FrazzleIIIII — Gravity III — Paralyze III — Silence — Slow III
Break — Breakga — Sleep III — Sleepga III
Gradual damage:
Dia IIIIII — Diaga — Poison I • II — Poisonga
Unavailable to players:
Bindga — Blindga — Curse — Diaga IIIII — Dispelga — Paralyga — Poisonga IIIII — Silencega — Slowga

Magic Category Jump: Blue MagicDark MagicDivine MagicElemental MagicEnfeebling MagicEnhancing MagicGeomancyHealing MagicNinjutsuSongsSummoning

This article uses material from the "Dia" article on FFXIclopedia and is licensed under the CC-BY-SA License.