I really like, where this deck is going. The idea is nice.
But I don't really see this deck winning against anything :/ You say it's for T50 or FG's
FG's: While testing in trainer, they all killed me, before I had even a chance to build up the deck. I had one blue Nymph out and was ready to start the battle, but in the next turn, they always killed me, because there's no shield or heal
T50: In T50 I think this deck performs bad as well. Because in T50 are basically only two types of decks (At least when I play it): Rush Decks and Rare Card Farms... Well, Rush Decks are too fast, like the FG's, and Farm Decks don't do anything, you could beat them with Photons ^^
Maybe this deck works versus Halfbloods? Or would this deck work too, if you took out a few cards and make like a 35-40 card version? 50 cards are just too much :/
[edit]: I have to add that I tried a fully upgraded version in the trainer, and I still couldn't beat any FG after 10-15 Fights (I know, this aren't enough to make any statistics...)