cleinen561

Psychic Barriar is a definite counter and the controller takes one damage. Counterspell is also a great one and there are cheap versions of it. Also peordain or ponder are great draw cards that are better than the ones you have.

also
+2 giant growth
-3Mussel burst
+1 Titanic growth

Add some dual lands but other than that +1

Btw Ultimate Price isn't standard anymore.

Decent deck but I think there is to much land in here. Take out 1-2 land and switch Nightmare for Nighthowler, it gets +1/+1 for each creature in all graveyards and it has 3 cmc instead of 6. If you do, add a bit more removal or a tad bit of mill
like Returned Centaur.

Taping creatures without attacking causing inspired to activate the next turn and you can use it to ramp.

Awesome deck! Ireally like Izzet and this is a great one. I have a deck like this one but it is more based around instants and Sorceries that draw cards and cards like Wee Dragonauts that boost when you play sorceries. if you don't mind check it out here.

http://www.mtgvault.com/cleinen561/decks/izzet-aggro-draw/

Ture. didn't think about that

I have a Question also. Wouldn't a plains be better than cavern of souls because you can use the white mana to play non-creature spells.

Maybe Suture Priest or Thraben Doomsayer. Just a thought, Suture Priest does the same as the sisters and it does damage to your opponents if they play creatures but it has 2 cmc. Doomsayer is really good too, a 1/1 every turn. You won't get to the fateful hour though.