There's about a 1k gold gap between the time that AP carries would get seeker's before the AD caster gets black cleaver. Didn't say it was going to do all the work for them, it's just a cushion. Made out of fragile wool. That likes little girls.
Your mission, should you choose to accept it, is to find the monkey. http://www.youtube.com/watch?v=GJiIkRwS8Wc