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Original Description:
 
After her brutal defeat at Rainbow’s hands, Lightning Dust was out for blood and revenge. She knew she couldn’t just face her rival right away though, she needed to train and become stronger, but she never was one to just do things half-heartedly. Instead of simply going to a gym to practice like anypony else, the brawly pegasus joined an underground fighting league and made a name for herself by crushing her opponents in brutal and merciless fights, and soon enough, Rainbow would be her next victim.
 
But before that, there was just one more fighter in her way…