Fey Light
There are two original Japanese abilities that are both translated as Fey Light. The first of them is 妖精の輝き [yousei no kagayaki] or 'glow of a fairy' in Japanese. The second is フェイライト [fay light].
Final Fantasy XIV

Effect: 30% skill speed increase for 30s
Cast time: instant, Cooldown: 60.0 s
Range: 0 yalms, Radius: 20 yalms
Learn: SCH40, Use: Selene
Description: Increases skill speed of self and nearby party members by 30% for 30s. Cannot use while Fey Glow effect is active.
Other: is placed on a separate pet hotbar when usable
Other: フェイライト in Japanese
Final Fantasy Tactics
Other: the ability used by the summon Faerie
Other: 妖精の輝き in Japanese
Category: Ability