I'm betting on shadowball... or at least hte "Not Swift" scenario...
I honestly dont have a copy of XD to test this out on... but i'm hoping that Shadow Ball will happen in the Cave area.... or at least something other than swift (makes me wonder why they added such areas).
I suppose i should just try it against my friend... if it works, sweet... if not.... i get my... handed to me... ugh... but i'd rather kno before i have to face off with him (he's my rival, he will never let me live in peace if he wins).
Oh well... If anyone can confirm what attack nature power will do in the Cave area of XD in a link battle, please do let me know... and if not, i'll post next time i battle my friend