Ive played with Infect since it came out and Ive always strived to make my deck really fast. I have won in less than 10 turns with this deck on several occasioins but id like it to be even faster, any feedback would be greatly appreciated.

http://deckbox.org/sets/171958

The fastest infect deck out there is going to be mono-black. It can put up turn 4 wins on occasion and turn 5/6 wins are fairly regular. That being said the deck is somewhat costly to build and fairly one-dimensional. here's a random list from the internet:

2 Liliana of the Veil
2 Victim of Night
4 Lashwrithe
2 Tezzeret's Gambit
2 Dismember
4 Whispering Specter
4 Inkmoth Nexus
4 Phyrexian Crusader
2 Virulent Wound
2 Skithiryx, the Blight Dragon
1 Tumble Magnet
2 Nihil Spellbomb
4 Plague Stinger
2 Contagion Clasp
2 Distress
21Swamp


Sideboard
1 Tezzeret's Gambit
2 Spellskite
3 Phyrexian Vatmother
2 Black Sun's Zenith
3 Flensermite
2 Memoricide
2 Doom Blade

I'm sure there are cheaper ones out there if you look around.

If you want to stay closer to your deck I would recommend focusing on lowering the mana curve by dropping the expensive creatures in favor of faster ones.

Yea i was definitly thinking of throwing in some lower cost creatures like Ichor Rats and Ichorclaw Myr things like that, which i have had in it before, Ive just gotta balance it a lil more and i may move to mono black with this one along with artifact creatures of course

Here is a mono-black infect i threw together tonight. I really dont know how fast it will be lol til i test but it is definitely just a rough draft til i can get to packards.

http://deckbox.org/sets/172129?