Simple exploit bug couldn't find if it was a repost, did it today though. What it does is spawn the two gryphons that are aggroed when you attack a flight path master, but over and over many times again.
I did this on my horde character, unsure if it can replicated at other flight path masters/towns/factions sorry.
Step1: Go on the building directly behind the FP master in Darkshire. Very easy jump, and just walk a little back on the building.
Step2: Use range ability on FP master ONCE.(MAKE SURE that your target of target is turned on in your interface.) Keep the FP master targeted at all times.
Step3: When FP master de-targets you that means she is out of combat and you can attack her once with a range attack again.
Step4: Rinse and repeate to spawn many gryphons by 2's =)
OH and I am unsure if there is a spawn limit on them. Me and my friend spawned ATLEAST 20
They seem to despawn/die after 5-10 min or so.