|Seria says: "Nothing should be as mysterious as I am!"
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Fairies act as supplementary items in dungeons. Appearance of fairies is not a fixed event; it is instead randomized for each run. Some appear out on the field, while some must be found by destroying objects in the room. The special effect of a fairy is applied to whoever consumed it by moving near it. Fairies with a heart sign, however, affect all party members. Fairies do not disappear until they are consumed, meaning it is possible to explore other rooms and return to use them when necessary.
With the Great Metastasis, the appearance of fairies are now exceedingly rare, especially on Arad. Noticeably, circles/auras can now be found on the field with the same effects as the HP/MP Replenishing Fairy, the Blessing Fairy, and the Haste Fairy, as well as other kinds which range from refreshing cooldowns or increasing jump height.
Fairies are still commonly found in Another Arad, where the Great Metastasis did not occur. Most noticeably, almost all Another Arad dungeons has a Haste Fairy in their very first room, within a chest which first appears to be a trap.