This is meant for one thing and one thing only, getting to the enemy's base. This does horrible when fighting other champions but will DESTROY turrets. It is best done in mid, but with a high damage or tanky champion with you. For the most part you'll want to be avoiding team fight, unless you can stay a large distance away.

One of the most devastating things to do is done with the Zz'rot portal. The minions that spawn may be weaker than lane minions but they deal a large amount of damage to turrets, but remember that turrets target these first(above all else unless you attack a champion) and they can't take many hits. The ohmwrecker allows you to extend your push past what it would have been normally and getting in extra damage from the portal.