Originally Posted by Reelando Mortal
you should look at my match history. I don't think you as well as other what I have found with in Twitch's skills.....going straight up AD at an early game is not the answer. don't get me wrong I know who good IE is and is will indeed wreck the face out of you.
Considering rushing inf edge will increase your damage output by around 120% and increase your critical chance by 25% at 250% damage, making your total damage around 150 with a 1/4 chance of 370, or on average 227 damage at around a 350% damage increase with critical strike occurrence factored in, yes- it should be immediately built.
Bloodrazor's strength is its 4% total health damage passive, meaning you want high attack speed when you use it. I'd suggest using Teemo if this is your strategy, as his skills favor on-hit builds more.