This won't end well.

10147713
Of course it won't.

The dreams had been going on for a while—usually the same, with minor details different.

Come out, Luna. We all know you have something to do with this.

"At your age, your youth should be free to finish, not spent on what might please the fillies."

Why not both?
Maybe he can convince her by visiting more often while the effect of the potion is active.

'Flim & Flam Curative Elixirs' was the sign on the wooden cart they wheeled out

Run, Rumble, run!

"You may in fact notice prolonged and irreversible effects that are totally and one-hundred-percent part of the intended pharmacology,"

Run even faster!

Well then, the story of Rumble and his potion continues.
I look forwards to see where it goes.

Flim and Flam? SERIOUSLY?! I would've thought Rumble would know better than to trust those two conartists!