Hey BarbJ, thanks for the reply. I used to run Frozen Heart in my build, and yes, it does push you up and over the CDR cap, however with my build and runes I sit at 39.89% and as the cap is 40%, it's not a huge deal to be missing out on .11%, imo. The 500 Mana from the Frozen Heart falls short in comparison from the 725 you get from a fully stacked RoA. And while the 99 Armor is nice, I find the 630 HP from the RoA to be more effective, as it will help towards survivability against AP and AD, rather than just AD. And as for the AP being useless, it's really not. Ryze's Rune Prison deals 200+60% of his AP, in this build dealing a very respectible 810 damage. As does his bounce scale with AP. Try it out first please :)

I would highly reccomend you put a Frozen Heart into your build somewhere. While your three Rod of Ages makes sense in that it gives you lots of mana, it is not very efficient. You are not only buying the mana and health, but also the ability power (which you don't need as Ryze). The extra armor granted, as well as the aura debuff is very helpful for your team.

Doing this puts you over the CDR cap, but you can also change your boots for magic penetration.

Looks pretty good though.