A Trolls x MLP Crossover Fic

As the mane 6 were summoned by the Cutie Map one last time months before Twilight's Coronation Day, they were led to a lone Tree up a hill. A portal opened beneath them, changing their appearance all differently from each other.

They each woke up separated and confused, where's their horns? Their wings? Their other two hooves? Their tails? Well... for some, they have the other of those and lack the others... But where are the others and what is the place they were transported in?

With each in their own, they try to learn more about this new world and find their way back to each other soon. Will they be able to do it along side this Rockapocalypse?

What comes after the text "United we stand"?