I'd echo Garren's comments, except for the Elixir. I know it looks nice, but unless the
Well of Lost Dreams is up and running at full force (and if it's running at full force, why aren't you winning?), chances are you won't see very many of the cards you recycled. This essentially means that we're dedicating card slots to pure lifegain, which is not a good idea even in this deck.
I would also go down to 3, possibly even 2
Serra Ascendant. They're insane once you get to 30 life, but until you do they're a French Vanilla 1/1 and not exactly game changers. You want these guys to appear mid- to late-game, not in your starting hand.
I'd also recommend two
Solemn Offering as possible additions. A bit like
Rain of Embers, it may surprise you just how many targets it actually has. Almost every deck had a handful of powerful enchantments or artifacts that can be most annoying if unanswered.
Erratic Portal,
Future Sight,
Sulfuric Vortex,
Wild Pair, basically all of Peacekeeper's removal spells.
Panoptic Mirror. The list goes on.
Other possible additions are
Loxodon Warhammer (a tad slow, yes, but once it gets going it turns any creature, and particularly your fliers, into potent threats),
White Sun's Zenith (I know it looks pricey, but this deck likes to go long and this for X=3 or more on your opponent's end step can be game winning), and
Purity (basically shuts down BoF and against other decks it's still a Flying 6/6. Something has to close the game out for us if the lifegain doesn't go off perfectly).