Runes for Mordekaiser?

Personally, I go flat AP marks and quins, armor seals, mr glyphs.

I like resist runes. I play mostly blind pick, but if you are playing draft/ranked you can probably do a bit better. Scaling armor yellows, scaling mr blues, flat AP reds and quints. I imagine that MS quints probably have their place on him, due to his slow speed and the need to actually stay on someone to kill them, if you can't burst.

HP or HP regen is very nice on him, since you need it for your somewhat high Cost skills early game.