Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This build for Mordekaiser will kill everyone who attacks you. The damages from your thormail will pass through your shield... This is awesome. If you use your abilities well in team fight, you wont take any damages and the champions who'll try to kill will just fail and die. You'll heal you with gunblade, you wont get any damages thanks to your shield, and the champions will die just like this
Thanks you for reading. (This is my first build so be soft with me please :] )