Quote Originally Posted by The_Final_Stand View Post
I have discovered, to my horror, that the PWT forbids the use of Soul Dew on Latios, and presumably Latias. I did not credit GameFreak with this foresight, and Serebii doesn't mention it, so it came out of left field.
They didn't think they had to... it's been part of the banlist since at least Gen IV (if you do bring it in to e.g. the Battle Tower, it's turned off).