Is my MTG deck okay? It's a white life gain aggro.?

I'm not sure about those new cards, uming I haven't seen them, but what I know in the deck seems pretty good. Ajani's Pridemate is really awesome when you need him, and comes in extremely handy. The only cards that I would know about changing, just from battle experience, would be the Serra Ascendents, but I'm not sure... the one in my deck (combo-control) didn't work well since it was hard to keep my life above thirty when I had him. Of course, I was also playing against a red deck, so that should tell you something. Also,cards with flying, and cards like Silver Knight and White Knight (protection against red and black) come in handy. They can basically win the game by themselves if you're playing against red or black decks!! As a MTG player though, I would just battle-test it first... a lot of the people on Yahoo answers don't really look at the integrity of the deck, and how it works together... but good luck with it!! And for the life-gain part of it, try Angel's Feather, because that really boosts life, (even with my mixed deck.) It adds one life point for every white spell cast, no matter what player did it.