I thought of a way to represent shapeshifting ala Listens-To-Wind as an evocation. It might require a biomancy evothaum thing(check with your gm), but more on that in a second. The amount of shifts generated for the evocation equals Modular Ability Points. You don't have to take Echoes of the Beast or even Beast Change. Narratively, this can be represented as being unfamiliar with your form or simply skimping on the senses in favor of the hurting people. For example, Listens-To-Wind, in deadmanwalking's writeup of him, can do 11 shift defensive evocations. The bus-sized bear form he took might have had Supernatural strength, Hulking Size, Supernatural Toughness, and Beast Change.
Continuing the earlier-
Would a separate power "add-on" for Evothaum be a good idea? It'd look something like-
Evothaum [-1] Your mastery of whatevermancy has allowed you to use it far faster than most others. Gain the ability to use whatevermancy at Evocation's methods and speeds, as described in the Sponsored Magic sections (YS Page 288).
Personally I would only allow it for Ritual, citing focused practioners as being, well, focused, with full Thaumaturgy being too broad.
Thoughts? I really only posted this because I had the idea and didn't want to forget it.