The bantamweight showdown will not only serve as the co-main event for a card most likely situated around an Anthony Pettis vs. TJ Grant lightweight title bout, but it will ultimately reveal who the top contender in the division truly is.
For Faber, who has been on an absolute tear of late, defeating a high-caliber prospect like McDonald would once again give him the edge for another run at the title.
For McDonald, who is a Brad Pickett submission victory removed from a recent championship loss to interim king Renan Barao, finishing a tenured vet like Faber would forever etch him as a perennial title contender.
But in a time when the UFC is struggling to produce relevant bantamweight championship fights, due in part to Dominick Cruz's consistent absence, is it smart to pin a bona fide superstar like Faber against one of the promotion's most prized youngsters?
It all depends.
Both fighters are top notch. They're good on the feet, in the clinch, on the ground and really wouldn't surprise anyone if they happen to capture UFC gold within the next year.
Faber would certainly have the upper hand in the wrestling department and his infamous guillotine would cancel out McDonald's well-rounded grappling skills, but would the veteran be able to contain the most powerful hands in the division?
In the past, Faber has done fairly well opposite dynamic strikers. He contended with Cruz's lengthy jabs and unorthodox movement. He survived Barao's vicious versatility and slick leg work. For him, grinding things out and making it interesting comes natural.
With that said, he's never faced an opponent with the power of "Mayday." The fact of the matter is that the 22-year-old sports the heaviest hands in the weight class. When he tags an unfortunate suitor, McDonald's power usually prevails.
So it's going to be interesting to say the least, but if the young phenom can defeat his fellow Californian in fashion, UFC fans might witness a passing of the torch come December 14.