[DITR]

One section of the storyline(Probably in the final dungeon) would have each member of the mane six having to fight "shadow" versions of themselves. They would be one-on-one fights with exclusive equipment and/or skills for each pony as a reward.

Twilight-Dark Magic Twilight Sparkle
Vector- http://applejack.ponychan.net/chan/files...098423.png

Rarity-Nightmare Rarity
Vector- http://th06.deviantart.net/fs70/200H/f/2...6b0jro.png

Pinkie-Pinkamena
Vector- http://fc05.deviantart.net/fs71/i/2012/1...4r4c5m.png

FlutterShy-Flutterbat
Vector- http://th04.deviantart.net/fs71/200H/f/2...6zrros.png

Rainbow Dash-ShadowBolt
Vector- http://fc02.deviantart.net/fs71/i/2011/3...4har23.png

Applejack-Rich Applejack(If she had stayed with aunt and uncle Orange from Call of the Cutie)
Vector- http://th00.deviantart.net/fs70/PRE/i/20...3isy6v.png

I can provide dialogue if you need it.