Start off with Boots of Speed. Build to Phage, and then upgrade your boots to either Berserker's Greaves or Mercury's Treads, depending on the situation and what kind of champions are on the opposing team. Upgrade your Phage to a Frozen Mallet, and then build to Atma's Implaler. After that get a Wit's End. Next, get a B.F. Sword, and upgrade it to The Black Cleaver. By the time you've accomplished all that, you should be melting face like nobody's business.