Talk:Grand Mother/@comment-3245042-20180825231041/@comment-45.56.46.26-20180826002140

Functionally, only that one can counterspell the other efficiently, but neither can counterspell itself so easily.

In abstract magical terms, it should be like the difference between sculpting and mold casting. One forms a positive form directly, the other uses a negative of the form to mold a positive form. Yin would be the mold casting technique.