Chu'a'lor has asked you to return to him at Ogri'la atop the Blade's Edge Mountains after you have gained Apexis Vibrations from an Apexis Relic.
Long ago a now-extinct sect of the arakkoa known as the Apexis lived here. Remnants of their civilization are still present. We call them apexis relics.
What we know about them is that, when properly used, they grant a boon. Each relic presents a colored sequence which, when the crystals are pressed in the correct order, leads through a series of levels, each harder than the last.
An apexis shard is needed to power the relic. Return when you have attained the insight of the apexis vibration.