Flood of hares

16 lands is a bit too few. I know you want to get to 2 lands and field your Hares, and that's about it, but with only 16 you're going to eat mulligans for breakfast and lunch, and you'll be stuck at playing 1 spell a turn for quite a few turns, and you'll be down in development the whole game. I'd up the land count to 20, using Lupinflower Village as the 4 lands you need, which gives you more mana that aren't dead draws when you don't need anymore. Win/win.

Unfortunately, the ripple cards you've got in this build don't work the way I think you believe they do. They only target the cards with the same name as the cast spell, so only Surging Sentinels and Surging Might. So you can trim those 7 cards. If you want to try for a ripple effect, you can use Thrumming Stone, which will let you ripple every time you cast a Hare (which should be extremely powerful, as you get 4 cards with 1/3 of them being Hares (math is on your side)). It's 20 bucks a pop though, so that's probably not an option. If you want something similar, you could run Realmwalker and/or Eladamri, Korvecdal, which will help you run through the deck faster and keep the momentum going.

Another big card that would help is Aether Vial. Set it on 2, and you can put a Hare into play for free every turn, which speeds things up quite a bit. On the flipside, running Raise the Past makes perfect sense as both an answer to nukes and as an unbelievable trigger creator, as each Hare ups the triggers of all the others as they enter, so pulling back dead ones creates a tidal wave of tokens. Delney, Streetwise Lookout has the same idea, but it's 25 a pop, so again, probably a no go.

Instead of Intangible Virtue, which helps the tokens but does nothing for the Hares themselves, you could run Honor of the Pure, which will do almost the same thing. Giving the Hares bonuses is more beneficial than giving vigilance to the tokens, as you're gunna try to overwhelm opponent with damage rather than having to worry about playing defense. Since you're running Nantuko Shrine, you might run Anthem of Champions instead of Honor of the Pure, as you'll up the Squirrel tokens as well. However, I'd suggest running Valley Questcaller over anything else, as it gives you the best scrying you're going to get, and fits in with some other suggested cards like Aether Vial and Raise the Past.

Ajani's Welcome and Aven Shrine are great lifegain generators in here, no doubt. But you don't really need so much life, as again, you're trying to overwhelm opponent with a swarm of damage and not worry about defense. Instead, I'd advise running Caretaker's Talent if you can afford it (16 a pop) and/or Skullclamp, which will turn your tiny rabbits into a drawing machine of epic proportions, as you can suicide your tokens for 1 mana a pop to draw 2 cards, which will let you play more Hares, which spawns more tokens, etc.