Dat Urf CC

So apparently some champions can layer the stun from one ability over themselves (morgana Q) leaving melee champions pretty much in the dust against them. In fact, a lot of champions can either layer cc or kill you within half the span of their stun. It would be nice to have some slowly growing tenacity over the course of the game, sort of like the opposite of the heal reduction. It would be low or non-existent early on, but slowly grow until reaching its cap at 20 min. I don't know what the right ammount would be, but it would ideally give just enough to make short term cc still relevant while long term CC can't be chained with itself so often. My guess would be about 35%

If necesarry, it could just be applied to snares and stuns.