User blog comment:TheTobarMethod/Nerf Worthy Champs + Your Thoughts/@comment-3466579-20130707103118/@comment-8506165-20130708074252

Ryze's base CDs on W and E are suitably high to compensate for his resets and free CDR though. If he didn't get either, he'd be in a terrible position until he at least got Frozen Heart if he couldn't get blue, because he'd be stuck with 14 sec cooldowns on two of his three damaging abilities and a virtually useless ult (would only last long enough to cast four spells).

Also in what world is Ryze rushing Frozen Heart over RoA and Tear? He's not going to get it until quite late in laning, if not around the time of the first teamfights, particularly if he decides to detour for a Negatron Cloak against an AP mid for an eventual Banshee's Veil.