Deals damage to all undead foes.
Diaja (HRM4 in the NES release and Dia4 in the Final Fantasy Origins release) is a level 7 White Magic spell from the original Final Fantasy. The spell inflicts a massive amount of damage against all undead enemies. It has no effect on other types of enemies. In the NES and Origins releases, it inflicts between 80 and 320 damage, while in subsequent releases it inflicts damage depending on the caster's Intelligence. With either version, it is only very slightly less powerful than Holy in terms of base damage.
Dia means "day" in Portuguese and Spanish.
In ancient Greek religion and folklore, Dia means "heavenly," "divine," or "she who belongs to Zeus." The name is attributed to several figures, and thus is treated like an honorific or title.