Sounds like you'd be best off with a scion of Morpheus, or something of the same type.
Powerset wise I'd go for something like this:
Emotional Vampire [-1] (Dreams)
Feeding Dependency [+0] (Dreams)
Incite Emotion [-1] (Lethargy)
Sponsored Magic [-4] (Oneiromancy)
That's a pretty basic set up with some room for improvement through the Incite Effect upgrade tree. Feeding Dependency is in there because it's a RAW power, but I think the most preferred method of dealing with it on these boards is through compels rather than using the given mechanics.
ONEIROMANCY [-5]
Description: You have mastered the powers of Sleep and Dreams. Dreams are far more powerful than most believe; Dreams and Reality are like a wyrm biting its own tail - they both tell each other what they are, all the time.
Sponsor: Psychomancers, nightmare Changelings, and denizens of Dream sometimes have self-sponsored Oneiromancy. When Oneiromancy has an external sponsor, it's usually an ancient god of sleep or the ever-moving moon.
Agenda: Oneiromancy wants to put people to sleep, give them dreams or nightmares, and eat their dreams. Oneiromancers tend to be cold and proud, inclined to punish those who slight them.
Evocation: Oneiromancy evocations involve shadows, sand, reflections, perception, dreams, dreamfire, sleep, and the manipulation of oneiroplasm (psychically charged ectoplasm) to create objects.
Thaumaturgy: Oneiromancy rituals involve putting people to sleep, sending messages in dreams, manipulating perception, and making things from dreams real.
Evothaum: You gain the ability to use dream-related psychomancy, summoning, and conjuration with Evocation’s speed and methods.
Extra Benefits: Oneiromancy grants the Demesne power for the Dreaming. It also allows its user to use Lore in place of Empathy for the Reading People and Social Defense trappings of that skill.