Infested terrans blow nuts. They take to long to figure out to run into anything against the opponents i have. You tell them to attack something, they walk up to it, wait, then blow up. You would have to have like 12 of them to effectively do anything, and that would take a while. Just like scourge, they are not good against anything except carriers and battlecruisers, and a few others but it doesn't work against my opponents usually unless they are newb again cos where are you gonna find 1 carriers by itself or 1 bc by itself? You'll find 20 of em right beside eachother and kill all the scourges. Now you can work around this but I am too tired to type you would be better off making gaurdians, devourers or max hydras.