Executioner's Calling
I think that Executioner's Calling should be tweaked to apply Grievous Wounds from Physical Damage instead of just a Basic Attack
I just had a match as Garen against a Mundo in the top lane
I got EC as my 3rd item to help me manage Mundo's massive health regen, but besides my initial attack I rarely proc'd it's effect since I was spinning for a majority of the fight
I think this would help physical champions who don't rely entirely on auto-attacks