Talk:Mordekaiser/@comment-4636093-20150805172003/@comment-3493296-20150805185530

Q is an on-hit spell effect like on Fizz. It does proc spell effects. Also, E and R....

Zephyr is just better than Nashor's Tooth overall, yes you loose some damage and 10% CDR, but the movement speed is just a must have. And I can't see it replacing Blade of the Ruined King in my build either, as it has an active that grants you MS as well.

Zephyr and BotRK just heavily outhsine Trinity Force and Nashor's, especially if you option for Boots of Swiftness. Also 90% AS > 70% AS. And it is cheaper.

For the other 10% CDR, get yourself Spirit Visage and round it up together with Randuin's. You see why I would go for this build? If you want to go for maximum CDR, 15% of runes would be enough then.