War3 engine doesn't support animated skins as quake 3 or other engines that use Shaders. All the animated skins int war (e.g. water) are a sequence of replaceable textures, and define by the engine, so even with modelling being able to animate them, you'll need to create lots of blps.
i think that he might be talking about 'attaching' the wind to the model. like particle emiter maybe(i dont know anything about particle emiters so dont ask).