MLP: Iva

Iva is an earth pony mare from MLP with a brown coat, white chest, and light blue mane and eyes. She's a joyful, constantly horny mare with a love for fat asses and hoof massages, alongside size differences, growth, and above all she's extremely gassy and is very aroused by farting in general, especially on immense scale.. She also has a fat ass and thick thighs.

Recently though she drank a potion which makes her grow exponentially over time. There is no limit to her growth, she likes being dominant, having entire cities and eventually planets at her mercy for her to destroy and ruin as she pleases. She likes forcing entire cities worth of ponies to worship her under threat of destroying their entire city, forcing them to massage her massive hooves and pleasure her massive pussy as her form grows larger and larger because of the spell. She likes to crush entire towns or cities with her fat ass, or other times prefering to gas them with her farts, and if big enough she is willing to crush the entire planet with her fat ass.

She also loves face sitting and other things related to using her fat ass.

Throughout the story there will be mentions of Iva growing bigger and bigger.