I wouldn't worry about removal and counters with this. just run protection for your creatures and card advantage. I recently made a blue/white heroic deck that's standard, check it out sometime and hopefully it gives you some ideas :)

@Hills: I would leave it out, but it leaves me wide open to Stormbreath Dragon, as I found out last night at FNM. I'll have to put something in for that.

Hey I'm back again. Glad to see you moved away from the exiling effect, its cool in flavor but not ideal for standardSo I've come with some cheaper suggestions to fit the heroic build and maybe an answer for your stormbreath problem, since celestial flare cycled and left white hapless against that dragons dickery.
Ill start with the expensive way to deal with the dragon then the cheap way. Then a budget heroic option.
Elspeth, Sun's Champion Her -3 gets it plus she a bomb, and she will be dropping in price when the elspeth vs. kiora comes out. idk how old you are but its good thing to ask for, for christmas or splurge and get em.
Curse of the Swine .09 on tcg payer, and smites the dragon
Heroic option
Eidolon of Countless Battles 1.50 on tcg player. bestows for 3 with the Hero of Iroas out and kicks ass with a bunch of weenies

Welcome back, Maddest_MAB! Thanks for giving your thoughts once more. Prepare for a long reply

I think Elspeth might have a place alongside Eidolon, but I don't think that I would use them separately. For Eidolon, I've found that I rarely have more than 3 or 4 creatures, and the Ordeals all fall off after a bit, so it may not be as good as it looks. Plus, it really doesn't solve the dragon problem. With Elspeth, it gets a LOT better. My concern there is that the -3 would also hit any dude I've buffed up, plus she has a rather high CMC on her own, comparatively.

Curse of the Swine is actually one that I have looked at already. I think that it might work well, and in other circumstances as well.

Other Stormbreath answers I've looked at:
- Counterspells, namely Disdainful Stroke and Stubborn Denial, maybe Dissolve.
- Singing Bell Strike, Icy Blast, and Crippling Chill might help out a lot, but are partially/mostly temporary.
- Voyage's End and Force Away have been suggested, particularly Force Away.
- Turn to Frog and War-Wing Siren are two out-of-the-box ideas I've had.

Any thoughts/criticisms?

I wouldn't devote space to the counter spells mainly because I don't think this deck wants to be saving mana for the opponents turn, aside from 1 or 2 white to protect a weenie.
Speaking towards the dragon killer how do you feel about the Curse of the Swine?
I rather like the Singing Bell Strike but they may have the 6 mana to untap it once you stike em. Id say consider the Turn to Frog or Curse of the Swine before the bell strike.
As for the War-Wing Siren I've liked this card for a while its flying, its a heroic that gives +1/+1 counters and its blue. Here are some suggestions for cards to cut/add as you find them:
-4 Favored Hoplite, +4 War-Wing Siren
-1 Stratus Walk +1 Seeker of the Way
-1 Ordeal of Heliod +1 Seeker of the Way
-4 Defiant Strike +4 Either Curse of the Swine/Turn to Frog
Maybe consider -1 Battlewise Hoplite -1 Hero of Iroas -1 Aqueous Form For +3Fabled Hero.
I've changed my mind on the Hero of Iroas in this deck, i think it fits better in a bestow deck where the enchants cost 2 to 3 colorless mana. in this its only reducing the cost of spells that are 2 drops.
The best part of stratus walk is the draw a card, I think you may find more value in Military Intelligence if you run this card I would keep the Favored Hoplite's.

I rather like Curse of the Swine and Turn to Frog. I had the same thought about Bell Strike. If they just played a 5 drop, they'll probably have 6 to untap, though it would slow them down a ton. I'll keep War-Wing around to test out.

I've considered Military Intelligence before, but I decided not to run it, simply because there were other things that I found more useful.

I've thought some more about the Singing Bell Strike andThe problem I see it being used to slow the opponent down, stormbreath is usually all they need to lock in their victory. Even if the opponent isn't playing spells after they resolved the dragon, he is a 4/4 you can't block, thats a 5 turn clock assuming you still have full life and he doesn't have burn spells. The bell strike is also weak in that it is an enchantment, meaning it can be removed in three ways.
These are cards I expect you may see be sided in when the opponent sees the bell strikes, if they don't already run them Main board (namely the feats)
1. Enchantment removal Naturalize, Erase, Deicide, Back to Nature
2. Bouncing the dragon and replaying it
3. Giving it protection from blue with Feat of Resistance and cards of the like
Singing Bell Strike Is a good card I just don't think it does the job you want it to, pertaining to dealing with the Stormbreath Dragon

I think those are very good points, and I truly thank you for your thoughts and advice. I believe you've persuaded me to go with something else.