Elemental Gauge
Elemental Gauge is Black Mage's Job Gauge.
Elemental Gauge in PvE
The Elemental Gauge indicates whether you are under the effect of Astral Fire (after casting a Fire spell) or Umbral Ice (after casting a Blizzard spell). While under the effect of Astral Fire, all Fire spells will have increased potency, but require more MP to cast. While under the influence of Umbral Ice, you will have significantly increased MP recovery.
Executing the action Enochian while under the effect of Astral Fire or Umbral Ice will set the lower-right corner of the Elemental Gauge aglow, indicating its effect is active. Enochian increases the potency of spells, as well as unlocks powerful spells such as Blizzard IV. Enochian fades when Astral Fire or Umbral Ice expires.
Casting Blizzard IV grants three Umbral Hearts which are represented by arrows in the Elemental Gauge's lower-left corner. An Umbral Heart is consumed each time a Fire spell is cast, nullifying the MP cost increase applied by Astral Fire.
Upon learning the trait Enhanced Enochian, you will be granted Polyglot after maintaining Enochian for 30 seconds, represented by crystals at the bottom of the Elemental Gauge.
Upon learning the trait Enhanced Polyglot, you will be able to stack a second Polyglot.
Simple Mode
Elemental Gauge in PvP
The Elemental Gauge indicates whether you are under the effect of Astral Fire (after casting a Fire spell) or Umbral Ice (after casting a Blizzard spell). While under the effect of Astral Fire, Fire spells will have increased potency, and you will be able to cast Fire IV and Flare. While under the influence of Umbral Ice, all spells will have reduced cast and recast times, and you will be able to cast Blizzard IV and Freeze.
You will be granted Polyglot after maintaining Astral Fire or Umbral Ice for 30 seconds, represented by crystals at the bottom of the Elemental Gauge. Polyglot can be consumed to execute Xenoglossy.
The time required to acquire a stack of Polyglot is reset should Astral Fire or Umbral Ice fade. However, any accumulated stacks will not be lost.
Simple Mode
Umbral Ice and 1 Polyglot
2 Polyglot without Astral Fire or Umbral Ice