GalinPwns

I'd replace Giant Growth with Vines of Vastwood, I run that in my infect deck. Not sure what Birds of Paradise is doing for you in the deck. Your lands seem pretty balanced and it's only a two color deck. I'd rather have more creatures with infect (Ichor Rats, Glistener Elf). Still a solid deck.

Livewire Lash works great with infect, since it causes the creature to do the damage not the artifact. If they try to burn or destroy it they get 2 poison counters.

I agree that Sensei Golden Tails would benefit the deck, but I'm keeping the deck to all humans because I'm an ancient Japanese history buff and wanted a deck that would be as period accurate as possible (Yeah, I know I have moth riding samurai in the sideboard and a female ronin in the main, but at least they are still human). Now if they had a Miyamoto Mushashi card that did the same thing .....

I did have Konda's Banner and Oathkeeper in the deck at one point. I ended up taking them out to make room for more spells in the deck. After some play testing I may be adding one or both of these back in.

Tenza is definitely good for Red, but I figured the odds on drawing it and Fumiko at the same time were low, so I wouldn't get the full effect from it. In retrospect giving it to the Battle-Mad Ronin for a 2/2 (4/4 w/Bushido) trample might be worth it.

I agree w/LightningRing. An Ichorclaw Myr would be a good addition to this deck since you are running Tezzeret.