The Bond of Stone replacement keystone

Okay, first off. it's a worse keystone(for your individual champion), absolutely. Math doesn't lie. Unless you are basically being burst down from 100 to 0, which doesn't happen as often as whiny babies like to make you think it does, it's much, much worse for tanks. I haven't managed to win a single game with the new keystone. I might be missing something, but I don't think it fills any particular niche. At first I was skeptical of this keystone and figured it would make more sense to add it as a fourth keystone to that section of the mastery page, instead of replacing Bond of Stone...but now I think it's even worse than I thought it was.

My suggestion for making it better would be to make the healing scale with AP or some other stat than with maximum health. Any champion that I already used Grasp of the Undying with, I lose with when I pick the new keystone. And when I try the new keystone for champions that used to use Bond of Stone, it seems to be even worse. I try to get allies to fight with me, but it's so rare they trigger the healing, and the health boost is really nothing compared to the old keystone's ability.

I haven't extensively tested the new keystone, Braum for example shows some promise...but I'm pretty skeptical about any other champions at the moment. He worked just fine with Grasp, so being able to choose between 2 keystones might be nice for him...but all the tanks that used Bond now are going to have a lot of problems as they won't even be able to lane anymore. They're going to have to stay in the jungle and go back to Grasp or whatever.

The fact of the matter is, this keystone requires a low health ally to attack someone that you've slowed down. That means it depends on the teamwork of your ally to function. Keystones shouldn't rely so much on allies IMHO.