
To avoid confusion, use the following website and common sense for time travel:
http://wwp.greenwichmeantime.com/
World: TBA (probably Europe)
FC

Summary:
The trip will be divided into two parts: The first 4 kills will be made using the Instakill Darts, so players that don't have the requirements will still be able to enjoy themselves a bit by at least exploring the room and get an impression of Nex. Food is still recommended as she'll be able to output 600 damage at most, before dying.
The second part will be regrouping at the bank (we teleport after the 4th kill), and actually fighting her. At least 5 players are required, so we'll see how it goes from here.
Requirements and strategy:
For the first part of the trip, a frozen key is required (covered in the guide below) and food.
For the second part, everything is covered in the guide:
http://www.tip.it/runescape/?page=ancient_prison.htm
The key points being:
* You need experience fighting Nex. Just find a group on RSOF, see where they're at, turn public chat off, and jump in. Free training!

* You need an ancient ceremonial set (resellable after trip).
* You need brew and restore flasks.
* Combat stats in the 90s.
* High tier armour (at least Barrows and Chaotics).
* Overloads are highly recommended.
Tips:
There's a million things you can mention here, but the few important ones:
* Buff yourself to 110% health by burning 6 magic logs.
* Drink a brew set under 700 health. A sip restores 180 HP with the buff, and with the overheal, you'll discover that you don't waste anything.
* Nex can deal 850 damage in one hit under 3 conditions:
- 1st stage, if you get trapped in the centre and she's rushing.
- 2nd stage, if you stick under the shadow for too long.
- 4th stage, if you get stuck in the ice, and not freed on time (don't count on it).
Other than that, it's freestyle, and a lot of smaller hits.
* Don't be too afraid of dying, since getting back to the chamber is a piece of cake. Be afraid of dying twice.
That's 'bout it. Practice makes perfect, so if you wanna stay for the whole trip, best be ready. If we end up with 3-4 players remaining in the 2nd part of the trip, I'll get some freebies off the RSOF.
G'luck!