The deep lore
This object was created by an ancient empire as a data storage device - something of a fantasy version of a USB drive.
Allagan Tomestone
"Nor is this unknown to your masters. Which prompts the question: Why do they cling to these false deities? What drives even men of learning-even the great --to grovel at their feet? The answer? Your masters lack the strength to do otherwise! For the world of man to mean anything, man must own the world. To this end, he hath fought ever to raise himself through conflict--to grow rich through conquest. And when the dust of battle settles, is it ever the strong who dictate the fate of the weak."
Gaius van Baelsar
A mechanic where each player gets a symbol over their head featuring a number of dots
Limit Cut
This artifact was used to power the Ultima Weapon.
The Heart of Sabik
"The rains have ceased, and we have been graced with another beautiful day. But you are not here to see it."
Elidibus
A mechanic where a player is targetted with instances of high repeating damage meant to be endured by multiple players, often the entire party.
Akh Morn
These two facets distinguish a Garlean from a Hyur.
Forehead gem and inability to manipulate aether
"Even as the - celebrated the return of a long-lost friend, honorable men plotted to deprive them of another. Honorable men, to whom - was no hero, but a scheming -. Honorable men, who would fain wash the paving stones of - with the -'s blood."
Edmont de Fortemps
A mechanic where the boss strikes in a large area, often but not always the entire arena, while leaving a circle safe directly beneath them.
Dynamo
These are the four noble houses of Ishgard.
Durendaire, Fortemps, Haillenarte, Dzemael
"We make an effort to spare them the pain. But they sense what awaits. Rage in anguish, and cower in fear... and it it not beautiful."
Hermes
A mechanic in which players will be targetted by cones emerging from the boss's location.
Proteans or Earth Shakers
This civilization uniquely flourished during an Umbral era, and was responsible for the creation of Conjury and the Palace of the Dead, though it was not named that at the time.
Gelmorra
"The flaws and foibles which you so abhor are what make us who we are. Every nation-even yours, --is made whole through the combination of these imperfections, the strengths of one compensating for the weaknesses of another. While it is true that mankind succumbs all too often to anger and avarice, he may yet overcome his baser instincts through the forming of bonds with others, fostering community and cooperation."
Nanamo Ul Namo
A debuff that can be passed to another player through contact. Sometimes you are meant to pass this debuff, other times you are not.
Allagan Rot, or just 'Rot'