Here's the examples(also see http://www.furaffinity.net/view/3943903 ! ^^) for my MLP adoptables.

These are the current MLP mutations that I have templated.

They are as follows:

Earthie | Male Earthie | Twinkle Eye
Flutter | Fairy Pony | Unicorn
Pegasus | Dragon Pony | Windy Wing
Goat Pony

Mutations can be combined with other mutations (Ex: Unicorn/Dragon Pony)

Custom mutations are available with custom ponies, these are just ones that are already templated. ^^