FINAL FANTASY XIV Patch 2.3 - Defenders of Eorzea
Primal extermination squad, assemble! Well, except this primal is more than a little different from the rest. Earlier in the game, around level 30, (maybe you got up to here, @John?) you investigate the Twelveswood in order to check on the Slyphs, make sure they're not summoning a primal. Well they weren't at the time, but you turn your back on 'em and look what happens.
The Slyphs are one of the many beastmen tribes, which is a term for any humanoid beast. Every tribe has a God they worship, which they sometimes summon a facsimile of in the form of a primal. Usually this only happens when that tribe feels threatened.
It is not in Ramuh's nature to be aggressive, which isn't to say his presence isn't a threat. Similarly to the Good King Moggle Mog XII (may his rest never be broken) his summoning has a detrimental effect regardless of whether he actually does anything. When a primal enters the world, it passively saps aetheric energy from the world to maintain its form. It's not an immediate problem but it's kind of like a massive carbon emission in our world. It's bad for our ozone layer and can't be allowed to exist, which is essentially what a primal is in Eorzea. Despite all that, we set out to broker peace with him instead of fighting.
To be clear, just straight up talking to a primal like this is highly unusual. That he doesn't attack you on sight is very heartening. Nevertheless, we end up having to fight him anyway. It would suck to be deprived from a boss battle so this is hardly a problem!
Ramuh's theme is probably the most unique among all of the primals. It's not the kind of music you'd imagine from a boss theme.
This is a bit of a long cutscene but it does a good job of explaining the nature of a primal and potentially what the Ascians (black-hooded bad guys) are.
They are referring to Ramuh, who is sometimes called the Lord of Levin. Levin is an old word for lightning, which is Ramuh's element.
In order: Ifrit, Garuda, Titan, Leviathan, and Ramuh. They don't count the Good King Moggle Mog XII (may his slumber ever be peaceful) ;_;
It's probably worth noting at this point that Hydaelyn hasn't spoken to the player ever since the ending of the main story.
Tataru Gaiden: Provider of the Realm
Tataru is TOO. DAMN. CUTE.