I was going to run the 'Githyanki Invasion' campaign arc as mentioned in an old Dragon magazine - but then I saw this PF and thought 'what a great way for them to become attached to a town & its population just before I dump a Lich Queen army on it' - cue evil GM laughter.
As the final part of this AP is self contained (I've read the spoiler posted elsewhere on the board) does anyone (aka a Designer) know that if running an Invasion will 'ruin' the campaign arc as envisaged within the AP or is it flexible enough to withstand such strains?
