item to balance tanks

Basically, this item makes you tankier the closer enemies are to you. So it gives you X tank stats if someone is right next to you. It gives 2X stats if there are two people right next to you. Its like the mastery you can get, but the value changes based on the distance from the enemy champions. So if you are being effectivly kited, you will actually die really fast. But if you are right in the middle like you should be, you will be able to survive.

This can help make tanks less effective duelists.