It's interesting how water xyz has been winning tournaments and tiered for a long time yet other decks are the ones that take all the flak.
Isn't water xyz older or around the same release date as harpies? Yet not a single nerf
Water became tier deck one Shark character came to dl. Another interesting fact is that they open 90% with diva, or they tend to top deck her when they are about to loose. The only tier deck that can use all staples without a problem.