The Malphite Principle
The Malphite Principle (in Bronze and Silver) goes as follows:
"If you know how to play Malphite (moderately well, you can even lose lane a bit) and by the time you get your Ult your team is within FIVE POINTS of the other team's kills... more than half of the time you will win regardless (just a matter of how long it will take)."
Malphite makes many many other dysfunctional teamfight comp look good. Seriously, in Bronze/Silver they can't deal with your instant AOE 1 button initiation, pick potential, counter engage or tactical zoning with it. A 3 item Malph (even if its Gauntlet, Ionian Boots, and Sunfire) is a Godsend. Any more items then that and he's basically a low elo god.