"Thing is, the Arkenpliers only have a special effect on uncroaked units, they don't shock living units; or heal them; or have any other effect."
Do we *know* that? Possible that arkenpliers are part of "life" axis, and an attuned healomancer would first discover their healing powers. The magic kingdom mancers do feel that Wanda is doing stuff beyond croakomancy, upsetting the magic "balance".
There are small hints that Stanley's hammer may have powers beyond the known ones, eg the walnut to pigeons. Possible a different sort of attuned person could animate a few units per turn, similar to how Sizemore can animate.
