fuckin conceptual bullshit
I like it
Though i'm not a GM i will still judge ya. 
I think shit's too vague. Like, REALLY vague. Could it be perhaps specified a great deal more? How it works, what are the usual rote actions that this guy is actually able to do without spending like two hours on concentration and manipulation of the ephemera - because at the moment it looks to me like p much an "it's just magic" power.