Well, Morderkaiser was my first champion on league of legends, I used to play him as a tank, but it wasnt perfect for all the matches, so I decided do try him as an Ability Power Champion, the other team called me a monster after the game, so now I only play him as an AP :D

Well, I have a Health Page and thats great for early game, especially for Mordekaiser, because he needs Health for his skills, so I prefer to use my health rune page. But If you prefer you can use an Ability Power rune page, it will be great too.

I like to take the Utility Masteries, because they make me faster, give me more experience and reduce my time spent dead, I also like the Defence Masteries because they made me a real tank at the early game (as Mordekaiser), so thats why I've chosen this Masteries Sequence, OH! I FORGOT TO SAY!! THE OFFENSE RUNES ARE AWESOME FOR MORDEKAISER AP, THEY MADE HIM AP AT EARLY GAME :D

I like to take the Hextech Gunblade because it gives damage, life steal, AP and vampspell for Mordekaiser (especially the last one, because it makes Morde skills cost almost nothing :D), after that I like to take more AP (hahahaha) but a little of armor (because I was "born" to be a tank), thats why i choose Zhony*** Hurglass. After that I like to take MORE AP BWAHAHAHAHAHHAHAHA, but this item makes Mordekaiser the AP, because you know... GIVES HIM MORE 30% of his AP, thats all I can say of Rabadon's Deathcap :D
After that I'd like to an health/AP item, because it's extremelly important for Mordekaiser to have Health late game, of course it's because he is a TANK originially!
The last item you choose, I like the Hextech because you know... ITS HEXTECH :D

You MUST have the Ghost Spell, because it makes you save yourself almost all the time, and sometimes you can enter (or back to) the battle to kill someone :P
The flash is necessary in my opinion, because it makes you leave some ganks easily, but thats my opinion, because I always play 3v3, and in 3v3 you know... IT'S THE NEXUS DESTROYER SPELL!!
If you want you can choose other spells...

PROS:
GREAT DPS AND AP
KILLER
GREAT GANKER AND 1v3 KILLER (in late game)
LOT OF MINION KILLS xP

CONS:
YOU WONT BE THE TANK :(
I think thats the only cons... xD

Well, If you want to win, in champ select tell all of your partners that you will be an AP Mordekaiser, so they cant put the fault on you if you lose (but that wont happen hahhaha) and follow it in all of the steps... that's it, thank you, GL and HF...



That's my life with this build... simple and victorious :D