3.2 "Mystery" boss

[Morningstar1337]

Because Ravana and Bismarck didn't have that, nope.

Totally original.

Kinda feels like potential ring-out encounters are the only sort of fights they know how to make anymore.

Yeah that was the only sort of gimmick I can see between the three primals, but there are some distinctions

• Ravana takes more from Leviathan then Titan, considering that there are walls that prevent ring-outs at the beginning. He also takes a page form Ifrit's book during one of his Liberation attacks. (And Pillars of Heaven seems closer to the analogue to Leviathan's slam than it is to Landslide)
• Bismarck by contrast is definitely closer to Titan due to having an add with a Landslidesque attack but also seems to take elements from Leviathan as well (Beastmen adds, bubbles)

Also outside of primals, the only "Ring out" fights were in Ampador Keep, Gubal (maybe) and Neverreap. Counting the instant death barriers, those are pretty much exclusive to T5, T9, and T13 (and even then Thordian and Bahamut are the only Primals with that mechanic).