There's surprisingly a lot popping up. It still needs Surf Together to make up for any smaller damage and cleaning up later game with Dual Splash, but its highly disruptive. Basically, with the Lv. X out, if you Roseanne's and grab a Giratina (Let Loose) and a Mesprit LA, you drop their hand to 4 cards and power lock 'em. Then Supreme Command and Knock Off... they're pretty restricted. Can't Claydol can't Uxie. Pretty lethal if you play Mars too, and Giratina Lv. X only adds to the disruption.
It's near impossible to keep this up for several turns, I've seen some variants trying Ampharos instead of Mesprit, which is neat in theory, but I'm not sure if it's fast enough. I mean, power locks are nice, but how game changing is it if you set it up so late that they're already set up themselves? Anyways, with Aqua Shower, you cover their entire field, so everything is power locked with Amphy out. This version is terrible with Surf Together, lol, you can lock up your own field (Prolly play straight PL Empoleon). I've also seen 2-0-2 Alakazams, those are game ending if you set them up.
I dunno. Maybe some combination of it all? I've yet to see a solid list. Maybe play a Mesprit or two for early game until Amphy/Zam shows up, 3-1 Giratina, and a preferred Empoleon line (PL Piplup is nice for setting Amphy up too). I personally like Zam more, especially because you don't need to worry about locking yourself and you're free to play Empoleon MD for heavier damage.