Talk:Madred's Bloodrazor/@comment-8520635-20130518051843/@comment-5266525-20130611170105

Blade of the Ruined King has a physical damage passive that is far more relevant than Bloodrazor to the champions who would make best use of the stats it provides, heals you for half of its damage, and has a powerful active scaling with maximum health, if you really value it's contribution that much.

Even if they stack armor, you are still not stacking magic penetration either, so even the starting 30 magic resistance is going to dent what damage you do. And against tanky targets they are never, ever going to have as little as 30 MR.