FYI; CotC is not meant to be exclusive to tanks
What you guys seem to forget is what CotC replaced: Strength of the Ages.
A straight forward mastery that allowed Junglers to get extra tanky and do their job better, getting a free 300 hp in the mid game, making them spike harder and making them able to invest in offense rather than having to outright build a pure tank item.
Vi, J4, Elise, Nidalee, Graves, almost any Jungler used it, most of which not even being tanks.
So stop pretending that it's supposed to be an exclusive Tank toy because it really isn't. It should help divers do their job too, especially Junglers who lost the free 300 hp.
Hell, I ran SotA on Morde and I'm not complaining about Courage.
agra.
can have CoC too
shouldn't be able to use it for example.
I can agree with the ''Make it scale of bonus Health'' threads, because champions like
would still be able to use it :P
are marksmen who can use it

fighters who can use it
Mage who can use it
Brusiers who can use it
assassins who can use it