AP champions need higher cooldowns on their ults.
I just played a game where Malzahar used his ult on me three times in under 2 minutes. Do you know how much damage that does on squishy champions? three times is ridiculous. Same thing goes for most ap champions. If they can inflict that much damage, they either need longer duration in cd or lower their damage. Imagine Yasuo or Ashe have the levels of damage ap champions get on their ults and having the cds they do. That is what ap champions are coming to. So many cd items and they are all good tanky choices.
(+10% CDR),
(+10% CDR), and
(+20% CDR)...
to worry about besides the OP as
.