Transformative "Smart"

You just started a game with Tera Box vs Gardevoir ex. You are going second. Your opponent only has a Munkidori in the active with an empty bench. This sounds like a lock, except for the fact you only have a lone Ditto in the active spot. Ditto's "Transformative Start" allows it to turn into any basic in the deck. Can you pick the right one that will claim the early win?