What are Smeragle and Ditto's limitations in Pokemon?
Here are opinions and answers from FAQ Farmers: * Smeragle and
Ditto can both be found in Emerald. However, these Pokemon (in the
old games had no limitations) can learn moves from one another,
causing moves being learned that should not be learned. * In the
newer games, Smeragle cannot learn Transform and Ditto cannot use
Sketch (it will always fail).