Well, let's take a look at this super-hyped card.
Stats-wise, it's actualy pretty lousy. only 60 HP and a 10+ weakness means it will only get about 2-3 turns of use.
Now Evolution Wish is the big incentive. The ability to evolve one of your benched is pretty useful, especialy in decks with only 1 main line, or decks where the evolution lines are purely balistic. In otherwords, not the best in your average deck.
But you also need to concider if its worth it getting Pokemon through an attack, instead of Trainers. Trainers are useful the whole game, but a Phione isn't. And even the benched aren't safe...
Watter Pulse is also good, but I bet it won't see much use since a.)most Phione decks aren't water and won't stock :water: energy, and b.)you don't want to waste energy and an attack when you've got a move like Evo-Wish. But 30 and Asleep is very good for :water::water:. It would see more use on any other card.
But I think the hype needs mentioning here. This is a good card, but we are seeing a repeat of what happened with Pachi GE. 1 or 2 as Tech in something with lots of Basic-Searchability, or 4 in the right deck is one thing, but "I need 4 Phione for any deck!" is way overdoing it.
I would give it a 8.5/10, for a wonderful setup move, and a good attack. But low HP and limited use in late game work against this card.