In response to Adam Brooks' posting, The Shapeshifter Change is indeed my change and The Pirouette Change is Oscar's. They are different moves. Mine would never have been created if not for Oscar's move, but they are different. Here's the story:
I met Oscar while I was doing a lecture tour in Texas a number of years ago. Oscar showed me his move and I was very enthusistic about it. I loved the concept, but discussed with him the problems inherent in it...getting into it, getting out of it, and drawing focus away from the actual method. Within a few weeks I worked out Shapeshifter. A few months later I showed it to Steve Beam who insisted it be on the cover of the next issue of Trapdoor. I agreed, provided he also print Oscar's version in the same issue, which he did. This was done with Oscar's enthusiastic permission.
I have always acknowledged Oscar's creation and talk about it whenever I teach Shapeshifter. They are different moves. If you see them side by side you will understand this. The only relationship is the 'motivating force' which causes the change to happen. In Oscar's version, it's a little tough getting in and out of it, but more importantly the attention is focused on an isolated card. This makes the method difficult to disguise.
In Shapeshifter, the position of the card helps disguise the true method. By having both hands in play and the card close to the deck, the overall effect is much more magical and the method less transparent.
By the way, the move appears in my new book, DeSouza's DeCeptions. It was written by David Acer and is being published by Camirand Academy of Magic. Should be out the end of February.
So, there's my two cents worth.