I had the same expeirences.
I don't know what build you are using, but I could never decide if it was supposed to be a aggresive deck or a control deck.
I do know one thing, it needs more threats, and more cheap threats so you can keep up with green and push through counters. Unfortunatly, there are not many good white weenies right now that aren't rebels.
Can you think of any 2 or 3 drop white creatures that would would be protected from the Wave of Reckoning?
Or maybe Voice of Reason? (is that the one from nemisis with Pro. white?) Or the new Voice of All, would it help?
And maybe even up the land count some and put in Remote Farms for even more Mana exceleration. You've already got the Crytal Veins, right? And the diamonds?
I don't know. I like this deck, but against really aggresive decks, it petered out. I don't know...
Post a new thread in the deck forum.