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Casts Reflect on all allies.
Ruby Light is Carbuncle's ability which he casts upon being summoned.
Ruby Light is again the ability of the Esper Carbuncle.
In its summoning animation, the Guardian Force Carbuncle appears from a hole in the ground. It jumps up and casts Ruby Light on the party, granting them the Reflect status before returning into the hole.
Ruby Light is Carbuncle's default summon ability, which can be changed by equipping Eiko with a Diamond, Emerald, or Moonstone. In its short animation, Ruby Light only grants Reflect, but its long animation casts Protect as well.
Equipping the aforementioned Add-ons on Eiko will change Ruby Light into:
- Diamond: Diamond Light casts Vanish (short animation) or Vanish and Protect (long animation).
- Emerald: Emerald Light casts Haste (short animation) or Haste and Protect (long animation).
- Moonstone: Jewel Light casts Shell (short animation) or Shell and Protect (long animation).
In Final Fantasy XI, Ruby Light appears not as an ability, but as a gameplay element in Abyssea areas. Ruby light causes Red Pyxides (treasure chests) to drop from monsters more often and yield better items. Ruby Light can be obtained by defeating a monster in a Vision of Abyssea area using using Physical Weapon Skills, or from a Red Pyxides after a set amount of Ruby Light is accumulated (Roughly 20-30% of maximum). Some monsters such as Blood Bats, Caoineag and Pachypodium do not build Ruby Light from Weapon Skills and it must be built from Red Chest drops.
For information on Carbuncle's blood pacts with similar names to his classic ability, such as Searing Light, Shining Ruby, and Glittering Ruby, see Carbuncle.
Carbuncle appears with both his Final Fantasy VIII and Final Fantasy XI forms and casts Ruby Light in order to equal the opponent's Brave with the summoner's.