Clockwork Doom train?

[EdwinLi]

Plus, Garleans kinda really hate Primals... unless they acquire Allagan tech that is capable of capturing them.

Well Primals don't need to be worshipped to be summoned but

SPOILER

they need to have a strong enough belief to be given a form as it was revealed in 3.0.

Worshipping is just a method to provide a strong enough belief to provide the form for the Primal to take on since Primals are nothing more than figments of Imagination given solid form by the Aether resonating with a beings belief.

Anything will do as long it provides a strong belief with Alexander being a example. Alexander is not worshipped by the Goblins as a God but instead is seen as a tool for their goals. Their belief for a Utopia gave Alexander his form after leaning about Alexander's design in a Engima Codex.

So if a something like a Ghost Story about Doom train was to be strongly believed while having a large amount of Aether near by the Doom Train may gain his form and manifest into Eorzea.

[Nestama]

snip

Belief, Aether and a lot of crystals of a certain element.

[Vartio]

Belief, Aether and a lot of crystals of a certain element.

Correction: Crystals are huge concentrations of aether, so there's really no difference between the two.