Wukong

can lower your armor by massive percentages, even to the point of near zero. early kills will help keep him off of you, but once he maxes Q and gets his items he will cut through your armor like butter.

Shaco

AP breaks this build, even with all of your damage. avoid AP.

Evelynn

AP breaks this build, even with all of your damage. avoid AP. not only that, but she also has good cc and high burst as ap.

Gragas

AP breaks this build, even with all of your damage. avoid AP.

Ekko

AP breaks this build, even with all of your damage. avoid AP. not only that, but with cc, slows, and an ulti that can save him from your onslaught he is a force to be reckoned.

Diana

High AP burst. AP breaks this build, even with all of your damage. avoid AP.

Vayne

even if you have infinite armor and can block most of her damage, she can eventually kill you with her % max health true damage. so while it will take forever, she can and will kill you. top that off with black cleaver and you are not winning this match up.

Karthus

Extremely high AP damage, combo'd with a global ulti and things like dark harvest will get you killed. even when you think the fight is over, he can just ult you and it's game over. the only way to kill him would be to cc him and let aftershock block some of his damage as you whittle away at his hp.

high AP damage, but if you are aware and warding and avoid his ulti you should be fine.

Yasuo

If he ults you he gets 50% bonus armor penetration, leaving you at half protection. saving grace in this match up is that he has high attack speed and you can force him to attack you with taunt. other than that, his ulti only calculates damage as you having 50% armor, so you still have full armor to buff your damage.