Cry for help and watch the black wings unfold.

The Black Swan
The Black Swan is feared by many, revered by some, and worshiped by others. It is a creature of unknown origin and power. It is about as large as a pony and its wings bear feathers only at the ridge - the rest are those of a monstrous bat or dragon. Sometimes, people will hear the Swan's cry at night and many regard it as an omen of the worst of evil. Rumors abound like blades of dead grass in Autumn as to what this shadow of the dark truly means to the world.
Others have formed a cult that worship the Black Swan and their practices are secret and they exist as a hidden organization, except in the Borderlands where small sects are able to have some degree of openness.
The Black Swan does not interact with dragons. It keeps its distance and only concerns itself with the human race.
Followers of the Black Swan
There is a legend that the Black Swan will sometimes appear to those and call out to them in a time of need. But no one knows what really happens if you answer the call... no one that is except the chosen ones.
The ones that heard the Swan's Song upon their death, the ones that could hear the dark trumpet calling out to them at their passing - they might tell you that they were given a choice, that it was a choice to remain in death or a choice to live again in defiance. They might tell you that along with being given new life, the Black Swan's powers were extended to them as well as a set of the ominous bird's wings. Few tell of the costs to these boons, however.
Some tell of the Black Swan's generosity; that with their help, you too can join the ranks of the followers if you are willing to only give up your soul.
If you have listened this far into their tale and survived, you will not be surviving much longer...