One of the common magical elements in "Dwight in Shining Armor" was the transformation spell. In the first instance, Hexela's enemy uses a puff of fine chalky powder to turn Hexela into a hand mirror. To do this, we created a simulation of powdery smoke that we could control. With a digital scan of the actor we shot smoke out of her body while she shrank, giving the illusion that she was burning off into smoke.
In the second instance of a transformation spell, Hexela's enemy turns into a puddle of goo. Here's we took a scan of the actor on-set in wardrobe and in shot lighting. This gave us a quick digital match to the actual actor that we could then manipulate. With this in place, we ran a liquid simulation with the surface of the actor projected onto the liquid so that as the liquid melted down, the actor's surface texture moved with the liquid.