Auracite (Tactics)

The thirteen auracites in Final Fantasy Tactics are legendary crystals known as the twelve Holy Stones/Zodiac Stones of the Zodiac Braves of Ivalician legend. The story of the Zodiac Braves is a legend regarded by the Church of Glabados as the central doctrine of its teachings. The twelve Zodiac Braves are said to have fought the Lucavi demons, driving them back into the spirit world. The legend foretells that the Braves, carrying the Zodiac Stones, would come to save humanity should they ever be in peril.

The auracites are artefacts. Twelve are associated with the signs of the zodiac, while the thirteenth is associated with Serpentarius.

Story
In truth, the auracites facilitate the Lucavi's existence in the mortal realm via possession of those who hold their auracite. However, the stones may not be entirely evil, as one helps revive Marach after he is shot while defending his sister. Marach claims to have heard a calm, gentle voice telling him to go back, and speculates the stones are raw power shaped by the will of its wielder.

To release the Lucavi, the Stone needs a vessel. It is believed that the host must have the same zodiac sign of the auracite and requires that person to become the Lucavi's vessel, but this is not necessarily true; e.g. Wiegraf Folles is a Virgo, but is possessed by Belias, an Aries. In the case of the Lucavi leader, Ultima, there can only be one vessel for her auracite in so many generations.

The Lucavi seek to revive their master, Ultima, which they believe will release them from the auracite altogether, allowing them passage to the mortal plane as they please. The Lucavi come to possess high ranking Knights Templar and orchestrate a war in Ivalice to facilitate the bloodshed needed for the revival ritual. Ramza Beoulve learns of the truth behind the war and collects the auracites on his travels, but fails to prevent Ultima's revival ritual. Ramza and his friends descend into the nether realm to defeat Ultima right as she is reborn, saving the world.

During his travels Ramza has a chance to see a machine of mysterious powers that reacts to auracites.

Final Fantasy Record Keeper
The Aries stone is an accessory, and was attainable by defeating Belias in a Final Fantasy Tactics event. When equipped, the stone provides a +30 bonus to the wielder's Attack stat. The Aeries has Synergy with the Final Fantasy Tactics realm.