This story is a sequel to The Pregnant Princess' Pesky Predicament
Big Mac isn't a hero. All he's ever done is stymie his envy as Applejack and her friends save the day again and again, preventing terrible monsters from wreaking havoc across Equestria. He wishes he could do more to help, but he's never had a chance. All he's ever been able to do is tend the farm and watch over the Apple family, year after year.
But then Big Mac is given a blessing of power. He's barely given time to react, but he does know that this is his chance to be the hero he always wanted to be. Before he knows it, he's all that stands between Equestria and oblivion, and only he can save the day.
Luna's not gonna believe this.
Picture by Kianara.
Chapters (4)
I feel a lot of potential on this, keep it up!
So...
No sex?
If Luna's still preggers with the batpony litter in this story, then I picture her rolling to get around.
ok i like what i read need more!
Alright, I'll follow this.
and soon, Luna will Whinny and Neigh-Neigh when she sees Mac's new stature
I wonder why he didn't ask Luna to come and see what the dream was all about....
3 years later, equus now orbits big mac
All hail Biggest Macintosh! King of the kaju!
So how were they able to use the growth spell on Luna without hitting her children? Not sure how increasing her size would help her move around if the children grow as well.
6672019
I'd explain it to you, but you'd need at least a Masters in Transmutation to understand all the magi-babble
You are correct though that the spell wouldn't have much point if affected her foals, as well, which is why it was so complicated and required the assistance of the Mage's Guild.
6672050 Essentially your trying to adjust the transmutation to not hit the foals. This is why said mages need a whole lot of control with their spells.
What? I'm using Fullmetal Alchemist logic here since the rules requiring transmutation haven't actually changed...aside from the medium in which the spell is cast.
I really hope that the next followup involves Mac and Luna exploring their relationship. This was a fun little jaunt, but I would like to get back to Luna and Macintosh doing some of the things couples do.
Any chance of a further sequel or three? Both this story & the one preceding it are quite marvelous, & I rather adore Luna/Mac as a ship
7102932
I AM planning to do a sequel with this at some point, but I want to do it justice so it's not something I'm going to rush.
Good things come to those who wait!
7104430
EEEEEEE!!! 
Yay for more mega-Mac
Clearly, Moonmare is looking for another round of Big Mac Tonight.
Ilove it so far it was a awesome read can't to see what happens next.
That was just plain awesome read ,this just keeps getting better.
Thae was awesome /epic this story just keeps getting better and better as it gos Ihope that one of his new powers makes him immortal, and it's. cannon with the other storys.
That. was a awesome /epic story can't wait for the sequel.Still hope he becomes. or is immortal now and will be .