by Donraj
***
“Come on, Princess!” Twilight said with a grin. “Letsa go!”
Celestia sighed. “Twilight, how in Equestria did you decide this was a good idea?”
Twilight continued to grin maniacally as she stopped her now genuinely princess-sized bulk from wobbling over. “Zecora has been teaching me about potions and it’s a basic principle of artifice that physical components to a complex working have greater efficacy if they have symbolic associations in the caster’s mind,” she said excitedly. “I simply combined the concepts!”
“And how is eating a mushroom associated with growing in size?” Celestia asked. She was genuinely puzzled. Which was a rare occurrence.
Twilight started to explain but just then Rainbow Dash entered the library with a thud. “Twilight, you won’t believe the new trick I taught Tank!”
Twilight’s eyes widened as the tortoise hovered into the room. “Ohmigosh!” she said as she levitated a flower over from a nearby vase and popped it into her mouth. She glared determinedly at the placid turtle and a ball of fire began to coalesce at the tip of her horn.
“I won’t let you take my Princess, Koopa!”