Why Mordekaiser SHOULDN'T be AD.
You often see posts on how Mordekaiser after his VGU should be ad, as it fits his thematics more... But people misunderstand Mordekaiser and WHY is he as terryfing as he is. Mordekaiser doesn't bring terror, because he is a big dude that hits hard with a big weapon... Nor because he is a powerful necromancer who casts horryfing spells...
But because he is both.
Mordekaiser is the bad guy of the league. He is the Overlord. Undead warlord who cannot be stopped (for long) or killed. He is one of the most dangerous forces on runeterra. And the thing about him is that he isn't powerful in one type of combat. You can send a warrior after him, but the warrior will fall before his strength... You can send a mage, but he too shall be overpowered by Mordekaiser's dark arts.
Mordekaiser is a warrior... Mordekaiser is a mage... and Mordekaiser is a strategist, leader and a cunning tyrant. These thing are what makes him as big of a threat to the world as he is.
http://pm1.narvii.com/5841/d71c0f828da4ccc479a2435126db0632b6fcea2f_hq.jpg