vatrik is right.
You seriously got too much Armor and too less Magic Resist. And Ghost would be a much better choice than Ignite if you want to be the tank.

dude are you kidding me?
1- 374 armor and only 131 magic resistance
2- ignite and exhuast, are you a ganker or a tank?
3- (E) is your most important skill after your ult, not (Q)
4- ninja tabi? get real!

I really don't understand what you did up there, it's just that the build won't work on 50% of the games and that's just not cool

Get a mercury tread the 35 percent CC reduction is better than ninja tabi. Also ninja tabi is not useful unless the entire enemy team is like dps. And get a skill other than ignite as u are the tank. The kills give to your carry and let them get fed. i recommend a ghost or teleport or fortify. Also you should get a heart of gold early so it pays itself off (a bit at least) if you are planning to get a randuins. Randuins and aegies makes good mid game items as randuins gives hp and armor and nice active. aegies is good aura but i rather get a HoG before aegies. Also, get a magic resist item, am FON since your hp is quite good and the regen will be quite large with warmogs. Also this cuts madreds blooadrazers damage. Btw i also suggest you max taunt before feint since feint would not give that much defense. A longer taunt means less dudes attacking ur dpses. Hope you think of what i say