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.
Mordekaiser, I have made a tank/killing machine.
-High hp regeneration ( 149.5 per 5th sec )
-High magic resist so you can take magical damage ( 185.5 )
-High ability power so you can take much with the spells (354.48)
-High movement speed so run as hell ( 437.4 )
-Low armor because I usually play close but not that close
-Low damage because I usually play close but not that close, but you still have 1 spell so you hit hard anyway
It works for me and will probobly for you!
it's expensive, but if you get all you have a real piece of deadly metal