That would give riot the option of having items with lethality without making the stat one that stacks. Riot could then balance it around the idea that you'd have a fixed value to work with. This would enable them to get the lethality part of some items right and once that's done, it'll be the other passive and actives riot can focus on.
Zielmann3 votesThen to be worth buying, it would have to be so strong on any single item that it would be a crazy strong spike for a single item. Also, it makes a lethality item a must-buy for anybody doing physical damage. But on top of that, you'd open up lethality as an option to add on with the maximum value to a standard IE/crit build.
Darkdemon6533 votesLethality is meant to be something that's stacked. Just by the nature of how resistances work in this game, resistances getting penetrated/reduced means further penetration/reduction is even stronger.
Due to that same mechanic, it's something that gets heavily punished by the target building resistances.
Critmaster Garen2 votesonly with last whisper and cleavers armor shred.
otherwise the effect is supposed to be stacked on assassins to create increased damage against squishy targets.
