Harmonys magic can be said to have one big strength, which can also be its one big flaw: It gives another chance. Not only to ponies and creatures, but also to feelings. The negativity that fled from all ponies minds after the "birth" of the tree of Harmony, coalesced at one point, forming the body of a pony. A black stallion that once before hat been the shadow on many ponies' hearts ...

This will be another try to tell more of Equestria's History - from a time we do not know much about.
I will try to keep it as close to canon as possible - but there probably will be a time when this story and canon diverge ...

Cover Art adapted from http://serenawyr.deviantart.com/art/Tree-of-Harmony-416113622