With this guide you will learn how to become indestructible.
This is ultra tanky and you will have awesome live reggen, and after you get baron, only one enemy cant deal any dmg, cause you reg more live than they can take.
It is possible to play this in mid or bot lane, but the best place for tanky morde is the top lane.

For runes i take ability power per lvl on every place, because except rylais i take no dmg items.

For masteries i take 9 points in offense, so i can put one point on magic penetration, and the last points i spent in the tankl skill tree.

I start with one regrowth pendant, and buy two more of them before i take heart of gold, because mordes abilitys cost life, and i dont play with spell vamp, so i need live reggen.
after i get boots, i take at first warmogs, because i want to stack it as early as possible, and then force of nature. on this point you will have awesome live reggen and much live, so it will be hard to chase you down. now you take the sorcerers shoes. the next item will be rylais, because it gives you life and you can slow your enemys. ( Thats very important, because mordekaiser hadnt any cc without items and summoner spells!) The next item is randumins, because we need armor and we wantr more life reggen! Now you are nearly indestructible, so you take guardian angel as the last iten. Now you have much life, armor, magic resist and very much life reggen and you can slow all of your enemys with your e skill and randuins, o it is very difficult to kill you, even if thee are more than one champ, trieing to chase you down, and after they get you, you will revive thanks to your guardian angel.

Early game:
In the early game Mordekaiser is a great pusher, so you can support your team by taking one or maybe two towers in the early game. If the enemys jungler is trying to gank you most of the time, you should ward, so you can hide behind your turret early enought, and call your own jungler for double penetrating your enemys.
Midgame: after you get warmogs and force of nature, you are able to initiate the teamfights but very important for teambattles is that you use your ulti at the enemys ad carry or tank, so you can push the enemys turrets after a succeed teambattle.
Endgame:
You are now indestructible. You can initiate every teambattle, ult enemys ad carry and after a team battle you can push constantly because of your health reggen, so if they dont kill you, and thats not realy easy to do, you take them, turret by turret, inhibitor by inhibitor.

Have fun with Ultra tanky Mordekaiser !!!