The Uxie, Azelf and Mesprit and their Lv.Xs from DP5 are incredible together. With Premier Ball and basic searchers and Pachirisu a deck with these cards in has an almost guarnteed T3 200 damage. Incredible!
^Basically every useful attack/Power/Body needs all 3 of them in play. So yeah, they work great together. Not much to discuss. They weren't called the Lake Trio for nothing, I suppose.
T3 200 is pretty impossible though, you would need to get them all 3 active once to Level them Up and to get 3 Premier Balls in your hand. Good luck with that.
Yes, this deck can be extremely powerful, (doing 200 damage every other tunr) so we ask ourselves: "What will keep this deck in check?" The answer is this: The Price. Lets see what this deck will contain:
x2 Uxie-$5
x2 Uxie X-$80-100
x2 Mesprit-$5
x2 Mesript X-$80-100
x2 Azelf-$5
x2 Azelf X-$80-100
x4 Pachirisu-$10-25
x4 Premier Ball-$1
x4 Quick Ball-$1
x15 Psychic Energy-nothing
The rest is for you to decide.
The Pixes deck will cost: +$340 to make at the most expensive prices. Unless these are made into tins, we will be fine.
lol 80-100? At most 60, we're not talking about Charizard here. I honestly think the deck will be too slow, unless you get a god hand of all three and their Lv.X and a Moonlight Stadium and draw into energies have fun then
^You don't need Moonlight Stadium, one of the MT trio gives them free retreat if I'm not mistaken.
EDIT: Also TSD seems unnecessary because Premier Ball can also fish the discard pile. But I personally wouldn't play this with Pachirisu...