I'm thinking of using them in an upcoming adventure. So, questions:
The Githyanki are described as having an anti-paladin in their larger groups. How would you play this? Use the anti-paladin from Dragon magazine?
As to the actual lair of Githyanki, the encounter number of 21-40 is listed for encounters in their "lair". Since the description notes that they aren't typically found on the Prime Material Plane except when they're on a mission, would you then assume this lair to be on the Astral Plane or in fact on the PMP as some kind of outpost, with the entirety of the Githyanki's "homeworld" being on the Astral Plane?

