[Vanyel]

He wasn't half Prophet though. A Prophet possessed his Human mother and forced her to marry his father and conceive Benjamin. Once the Prophet released Sisko's mother she left them. She them stayed away from the Wormhole until it was time to free it from the Pah Wraiths. That whole story line itself is also a DEM.

Whenever you deal with beings of extraordinary powers or abilities you cannot help but face the fact that sooner or later or multiple times those powers will be used to overcome an insurmountable problem.