Mind you, there's nothing stopping us from jsut using the rules in the collective Vampire Counts warscroll or the G.A Death book instead of these rules... Therefore the Dragon could still be summoned....
I don't think that the Crypt Ghast Courtier does have a head of the vargheist. In the app he just looks like a regular Crypt Ghast with their head and everything.Officially, the Crypt Ghast Courtier (Hero) is a Crypt Ghast (Crypt Horror Champion), but with the head of a vargheist. In practice, though, it will be any Crypt horror conversion or variant paint job that makes it stand out more from the regular unit.
Mind you, there's nothing stopping us from jsut using the rules in the collective Vampire Counts warscroll or the G.A Death book instead of these rules... Therefore the Dragon could still be summoned....
In the recent FAQ they released on the Facebook page it says you can use the old versions of the rules wherever you want but to make sure your opponent is aware of what the difference as they may only have access to the newest versions.What about using the warscroll compendium itself? As far as I am aware that's still valid..