Randuin's Omen
You uh, you really should have put more thought into buffing the critical damage reduction component of this item. It was already pretty strong against critical damage champions, now it's pretty much sufficient on its own to make such a damage source negligible when you consider all the extra mileage it gets from lifesteal/healing/shielding/etcetera.
Nevermind the fact you could actually stack the critical damage effect on top of all the other goodies. But hey, you definitely have a problem when a full fury Tryndamere with Infinity Edge/Statikk Shiv/Blade of the Ruined King is literally doing only 8% HP per crit to a target with only one tank item that is Randuin's Omen. Throw on the armor penetration nerfs and it's way overkill.
TL;DR 150 Hit Points for 10% Critical Damage? All bloody day. Even if critical damage isn't a thing it still has its uses between the slow on attackers and on-use, you've pretty much made critical-reliant champions a thing of the past.