Cool Story, Bro. (Turn 2/3 ML)

DeeperBiGB has deleted this comment.

Blight Mamba instead of Plague Myr. +4 Vines of the Vastwood +4 Rancor. -2 Titan Strength -2 Giant Growth -4 Brute Force.

you should add a black lotus

with a perfect hand and my enemies not laying a creature maybe turn 2 but you would have to lay glistener elve turn one thats a land and elve 2 cards. then turn 2 if the 1/1 is not dead or a blocker is not on my opponets field then i can groundswell, land, gaint grownth and Mutagenic Growth. Thats 4 more cards so all together you need all 6 of these cards turn 2 and maybe you when if they don't fog effect and wast your turn. sorry man just to much to go wrong here for turn 2 or even 3ish but turn 4 if you replace all your red pump with burn to burn blockers could be seccsessful turn 4 most the time. Good idea and i haven't played the deck so maybe i'm wrong.

As I mentioned back in February Vines of Vastwood should be a 4 of in this build IMHO. It really helps protect your fragile needed creature's. (Especially since you have so few). Apostle's Blessing should also be considered for the same reasoning as well as giving much needed evasion for the killing blow. Brute Force and Giant Growth are your weakest pumps and should probably go for these.

Again these are just my opinions but I do believe having played Infect and against Infect at the competitive level they will very much help you.

Right, you said you want this deck to be competitive so I'm not going to be as forgiving as I normally am.

OK. So this deck if a rather solved archetype but I guess you want to forget the evasion of blue to allow for more burst and reach with red. GREAT!

You still need to remember that the staples of the deck are staples though. You want 2-3 land Max, so you need to be running 8 fetches to ensure you can get the right mana off most of your draws, I would suggest wooded foothills and windswept heath, as they can both fetch green whatever, and if you add stomping ground both can fetch both red and green. This plus 4 mountains and 5 forests should be your land package, and that might be too much, and you might have to shave a mountain, playtest this.

Vines of vastwood is a must MB for this deck as you NEED to keep your creature alive whatever happens, as it will often be using all your resources on it when you go for the win. Apostle's blessing in the sb for when you face jund and burn is sorely needed as well, though I admit infect hardly ever SB's this is one matchup you need to sb for.

Fog will be a dead card more than it will keep you alive in most matchups, against good players it will do stone nothing. If you really want to run it put it the sb.

Test lanawar aguer but it seems far far too slow, at least I think it does. You have most of the pump but you should also be running become immense, with your fetches and spending pump spells you should easily be able to play this.

You have too many creatures and pump, you need to be playing Street wrath and gitaxan probe to thin your deck, take out one of each creature, one groundswell, all of the pytoburst to play four of both of these, they both fuel the become immense that you should be running over groundswell anyway, and make your deck far more contestant, it doesn't matter if you put yourself to four life. If you put your opponent to 0 that is.

The last thing you should do is study the modern meta in the location your going to, look ad VoDs from twitch or youtube of previous years competitions and build a SB to counter this.

Cards you should concider are,

surgical extraion
leyline of sactaty
apostle's blessing
Nephala academy
Spellskite+ wild definace (back up combo for people who dont die to infect counters)

You have a ton of useless cards in here. Fog should not be in the deck, you should have already won by the time you have to cast Fog. Like others who have commented, you need Vines of Vastwood. Infect is really really really vulnerable to kill-spells, and Vines of Vastwood should help you with that. Apostle's Blessing is also played a lot for protection. You need 1+ more Rancor, 3- Flesh//Blood, and fetches. Gitaxian Probe is also really good for thinning your deck, along with fetches.
Also, if this is your competitive deck, how does it play? Have you taken it to any tournaments?

How competitive do you want to be and what is your budget?

Infect is pretty much solved at this point for modern, but doing things a bit differently can be fun.^_^
Your land count should be 20, since you want to be running 4x Inkmoth Nexus and 2x Pendelhaven.
Assault strobe is very meh since it's sorcery speed and can't be cast during the combat phase. Temur Battle Rage has proven over and over that it is just better. Honestly I feel like you should drop assault strobe for Gitaxian Probe, since it's a free spell that tells you whether or not the coast is clear to go for the win and as a bonus it relplaces itself.
Blood seems very weak here, some spot removal in the form of lightning bolt or dismember seems better. Clear the way and whatnot.

You want to be competitive? That is not gonna happen without fetch lands. While you are durdling around trying to get the right combination of mana online you will be dominated in a format as fast as Modern. Fetch lands will also show you the real power of Become Immense, not playing such a broken card in this deck is a huge miscalculation.

You also need to get rid of the chaff: Stuff like Assault Strobe is hot garbage that looks impressive when goldfishing but sucks in real life because you are advertising your actions pre combat vs Temur Battle Rage that when timed correctly just flat out wins.

In addition you need to better identify what cards are excellent and what cards are less then optimal. Ex: Running 4 Rangers Guile over 2 Vines of Vastwood is just another misread that makes this deck durdle rather then kill.

I'm not saying this to be a dick, it's just how Modern works. This deck, as it sits, is realisticly trying to win with 1 creature by turn 4+. By then a deck like, say Jund, has seen 10+ of it's cards. What do you think your chances are...?