There are a few spots I'd like to offer some advice:
1) If you're going to play
bedlam reveler then add more instant and sorcery cards that have MADNESS. maybe some
just the wind, some
fiery temper, maybe even the
geistblast (so you could drop those into the grave for later use).
2)
Abbot of keral keep exiles the card off of your deck. I'm not saying whether you should/shouldn't play this card but besides the prowess does it actually have a reason to be played in the deck? You could always add
sanguinary mage and have some good vamp support.
3) Take inventory- If you switch these cards out for some of the madness spells from SOI, such as the ones that I previously mentioned, then you'd have more hand plays and interaction with the opposing player.
4) Galvanic bombardment- similar reason behind
Take inventory, it's not a bad card but if you want to get the most out of your cards and your plays you may want to play something that has more control or impact on the board state. For example, instead of
galvanic blast you could add
weaver of lightning and get more out of your spells. Also if you add
harness the storm you could get probably double the use out of your spells when using multiples.
5) How do you really want to play this deck? Are you playing it just to beat Bant decks or are you playing it so that you could try out an original idea? The deck itself can be done but depending on your motivation for the build can also steer you in various directions.