why Nivmagus Elemental ? I understand that he's a one drop but a two of seems almost like a waste. maybe remove two of the elemental and add two more Armed / Dangerous ?

Nivmagus Elemental is great against Mono Red, GR and G, because it can grow really fast, and become unreachable to kill.

And I can allways exile the spells if something goes wrong, like killing the creature that was about to get pumped, or a countered spell. It's not crucial for the deck strategy but it is usefull.

I made this deck with a few alterations. I used mindsparker instead of chandras phoenix and added one more Nivmagus in place of ash zealot also removed lightning strike and added two more armed/dangerous and one more shock

I'm glad that you based on this deck.

But let me say that Chandra's Phoenix is a key on this deck. Its is the only creature with flying (evasive), and the only one that keep returning to your hand, and because of that last ability, it does't have a target on his head. The Phoenix is the better creature to suprise your oponent with the combo Boros Charm+Titan's Strength for lethal.

Dude put green in this to have Gladecover Scout your opponents can't shoot him or kill him because he has he proof, also use blood rush creatures instead of titans strength so that they can't be countered

Thanks for the feedback...I see your point, and that works great in a RG blitz deck. Adding a third color in here, will reduce the speed of the deck, and will lead to an entire new deck's planning. Because cards like Ash Zealot (RR) would be more difficult to cast. And finaly if I would replace W for G...I wouldn't be able to use the instant double strike from Boros Charm, and that is the main core of this deck.

Here is the G/R version of this deck:

http://www.starcitygames.com/article/27562_Introducing-R-G-Blitz.html