The fastest way IMO should be this:
Catch a male Vulpix
Level it up till 39 (do not evolve)
Have it learn Extrasensory
Breed it with a female Zorua
You should have an egg that has a Zorua with Extrasensory
Sketch Extrasensory via a male Smeargle
Repeat above steps
NOTE: It is not possible to do so with Meowstic, as only the female learns Extrasensory , and it has to be male for you otherwise the resulting Pokemon will be an Espurr. The male learns Reflect instead of Extrasensory.
Hope I helped!