News that the Guild Master can write Ancient Quality ability books to create flying mounts for the Guild spread to every member within seconds. The great question on everyone's mind is, what exactly do they have to do to earn one?
Surely they won't just be handed out to hundreds of members; that would be a tremendous amount of work, even if they all could use them. So they must be reserved as a reward for good performance.
Every member has been motivated to contribute more than usual by the Quest Rewards handed out lately. Still, the prospect of an Ancient Skill and the power that would come with it is a substantial driving force not just to turn up for missions but to do well enough that they impress the other members.
Nobody knows how he is going to pick, so thinking that it might be by referral, favoring the members that he hears the best things about, sounds reasonable to them.