Okay, let's look at the components of the dream.
You dreamt of the Magician card.
As one of us, you probably have a fairly clear idea in your head of what the magician card should look like: a person with a bench full of Magickal tools, maybe holding some of them and pointing diagonally (or not), maybe wearing a lemniscate-shaped hat (or not). You'd also have a clear idea of what the Magician cards means to you: individuation, personal power, magickal power, manipulation, manifestation, initiating change, etc etc.
What you got on your dream Magician card, was a bird of Paradise (incidentally, which one? There are hundreds, from tiny to huge, from midnight-blue to pale yellowish-green). It was looking sideways into a mirror.
It did not want to face itself directly, yet it had to face itself somehow.
It was not any reasonable variation of what you might expect a Magician to look like, nor did it have any of the props to lead you to believe that it could do any of the stuff a "real" Magician could do. In light of that, it was there under the label of the Magician, under false pretences.
It was a creature, not human, so it was somehow less than it should be. At the same time, it was a bird rather than any other kind of creature, and birds are associated with Air and therefor the intellect, so it is a mental construct.
Therefore, it is a mental construct, operating under false pretenses.
It seems to offer you more determinism and abilities (as the Magician) than it actually has (a bird of paradise).
Yet, being a bird of PARADISE, and being easy to look at, it is peculiarly seductive.
Given all of that, I feel your subconscious is trying to tell you that there is an aspect of your "animal" or subconscious self trying to influence your higher (winged) self by means of its attractiveness and its promise of personal power, into giving it more sway over your behaviour and feelings.
So much for the interpretation. I throw in the advice on how to deal with this for free as a little extra (and like a Tarot reading, it's up to you how you take it): I recommend trying to make friends with as many aspects of your personality as possible - there's certainly a part of you that feel unacknowledged and would like to be brought forward into the light a bit more. However, keeping your conscious mind firmly in control of your decision-making processes is Always a Good Thing.