Random anti-ranged idea for either an item or a rune
Reduces damage taken from ranged champions by 10% (x% whatever) when within half of their maximum basic attack range.
Or
When within 350 units (since some melee's have 325 base range, not counting Aatrox's ridiculous ult range). And with this suggestion Kog isn't just debuffed vs the target for casting W.
Could be any type of item but most likely one that favors melee champs cuz they'd be using it so something like an Armor/MR/Health item or a Resolve Rune (assuming it'd have to replace one).
Heck it could be an AD Assassin item so Assassins aren't supposedly 1v1'able by ADC's when they dive them.