Thornmail, Deadmans, Guardian angel, Ninja Tabi, Spirits Visage, Warmogs. (in no particular order) + Tank rune Page, Tank mastery page. congrats you dont insta die. i built these items on maokai and took about 200 damage from a 13/1 varus.
The idea behind these items is that lethality is a Base armor penetration value. so if you have 40 armor and the enemy has 40 lethality then to them you have 0 armor and therefore they do true damage. So if a tank has 200 armor against a target with 0 lethality they take 70% reduced damage. If the enemy has 60 Lethality (which is pretty common) you need 260 armor to take 70% reduced damage from them. after that you have HP to back up your Resistances. 800 from Warmogs, 500 from DMP, 500 from SV. You should have armor runes and the +% resistances mastery. this will make ADC's building lethality tolerable and assassins do basically nothing. Assassins will stop targeting you and ADCs will start attacking other people.
Now after what i have said above you would think "then they will kill my team and then turn for me!" well see this is where the fact that tanks have some of the most fucking retarded base damages in the game comes in. you jump on their adc and kill that fucked because if your damage isnt enough then Pair that with thornmail and it DEFINATELY is. the assassin will have blown his load on your ADC and if you have a competent support then that fucker is dead as well. this leaves the enemy Jungler, Top laner, and Support. you can jump on the top laner and keep him busy while the rest of your team deals with the others.
Sure what i said above is a perfect scenario, but it is the basics of how league of legends works.
TLDR: Lethality is busted against squishies. not tanks. stop complaining. its weaker against tanks than armor pen. its just the flavor of the season stat and so its being built on everyone. Armor pen just wasnt.
