Ever get the shivers when...

You're working on certain characters, particularly villians that are more than capable of wiping out a city?

Case in point:

“You knew this day was coming. And this time, your powers won't save you or your precious ponies!” Heat Breaker snarled, before breaking into a coughing fit. Dark clouds of ash and toxic gas erupted from her mouth, intensifying with every hacking cough.

Heat Breaker, she's capable of unleashing tidal waves of fire, volcanic eruptions and summoning blistering heatwaves to sap a pony's strength. Yet for all of that, her powers are eating her from the inside out.

Her body has been ravaged to the point that when she coughs, she spews out clouds of ash and toxic volcanic gases that can easily suffocate someone if they're not wearing a mask or using an air filtration spell.

But how, you ask, did she become how she is now? That, my friends, will be revealed as the story progresses, and I will also make bios of some of the major characters like Faust, Nyx, and Frost Striker.

Till then, the Emperor protects!