Ceara entered Omadd's device, saw something terrifying and emerged as Scarlet Briar

She came out insane, but there's a method to her madness

We know from Thaumanova that she's researching magical energy and lay-lines

She's used Molten Alliance magitech to locate lay-lines

We know that there are lay-lines in Lions Arch, among other places

She's built her own personal army

Krait and Nightmare Court

Pirates and Inquest

Dredge and Flame Legion

and most of all, her clockwork horrors

She tricked her subordinates into doing her bidding

With promises of power resources or other gains

She modified her poison to be resistant to our anti-toxin

She could use it against an army

or a city

Mai Trin is preparing the Aetherblades in the mists for a big attack

There's a mists portal in Lions Arch

Jory! Lions Arch is her target! We have to warn Ellen!

I'll warn her, I'll let you know when I hear back

Make your preparations

Everything has been building towards a single devastating attack.