Classic FFXI community


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


Spell cost: 7 MP
Spell element: Light
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

How to Obtain

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


Price: 82 - 101 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

Defense down effect
Defense is reduced by 27/512 (5.27%)
This effect cannot be resisted except with Magic Shield.
Dia / Bio Priority
Dia and Bio do not stack.
Dia -> Bio -> Dia II -> Bio II-> Dia III-> Bio III
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
Dia (d-ī-ah), or often debated to be pronounced as "Dïa" (d-ee-ah), can be defined as the prefix that was derived from Greek roots, which means "to pass through or join", or defined as "the day" after the word "el dïa" in Spanish. Dia (d-ee-ah) also refers to God in Gaelic, and is part of the greeting used "dia duit" meaning Gods blessing.


  • Use of Dia in a party should be balanced against use of Bio as these spells cannot work at the same time.
v  d  e
Magic of Vana'diel: Enfeebling Magic
Bind — Blind III — Dispel — Gravity — Paralyze III — Silence — Slow III
Sleep III — Sleepga III
Gradual damage:
Dia IIIIII — Diaga — Poison I • II — Poisonga
Unavailable to players:
Bindga — Blindga — Break — Breakga — Curse — Diaga IIIII — Dispelga — Paralyga — Poisonga II — Silencega — Slowga

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