Soul Crystal (Revenant Wings)

The Soul Crystal is a gameplay element found in some battles in Final Fantasy XII: Revenant Wings. First used in a battle at the Fane of Gucuma Qul, each opposing team has one Soul Crystal, usually tucked away on opposite sides of the battlefield. The Soul Crystal will periodically revive its team's KO'ed Leaders (not Yarhi), who will reincarnate near the base of the Crystal about 30 seconds after they have been KO'ed. This effectively renders each team immortal until the Soul Crystal itself is destroyed, signaling the end of the battle.