Tarot_Freak, I think I know exactly what you're talking about.
A few months ago, we had a brief discussion in the Faeries Forum about how Froud's Faeries seem to be thoughtforms, or "bits" of consciousness that gather around a central idea (in this case, particular faeries or beings); therefore, the entities depicted in the Faerie Oracle -- moreso than any other deck I've encountered -- are in some sense alive. They combine our own consciousness with quanta, or "packets," of energy from subtler realms, and the result is a thoughtform: a being in its own right, not quite the same as ourselves. I believe that it is this vibrational difference between us and them that gives you the weird feeling you describe.
Many of Froud's Faeries are associated with elementals, who are beings responsible for form in the world of nature (dealing, quite literally, with the elements: earth, air, water, fire). They are of a different order than human beings, and their presence is often associated with strange sensations. The result can be feelings of approach-avoidance on our parts.
Because this deck fairly vibrates with aliveness, it is understandable that you might experience a sense of cautiousness in relation to it. I have felt this, myself -- not because I feel that any harm will come from using the deck, but because I sense actual presences speaking through it and I'm not always certain that I wish to engage in as deep a relationship with them/the deck as seems to be called for. Because, make no mistake, this deck is involving. I have never once found it to be dangerous or malevolent -- indeed, it is witty and wise -- but it does require a certain level of engagement that might feel unusual to you.
That's why the exercises in the book are so valuable. They give you an opportunity to explore and become acquainted with the deck and the Faeries, to literally get a "feel" for them in your own time and way, without making an uninvestigated commitment.
I think that you will find great pleasure and magic in the Faeries Oracle. It's in a category all its own, in my opinion, and you are sensitively attuned to that dimension (which feels decidedly different from the strictly human).
