With the mage update, now may be the only chance to add CDR not related to mana regen.
The two best CDR mage items
fill the exact same role, are almost exactly the same in stats and function, and are never purchased together.
is basically only viable on one champion, and
is viable on a very small handful.
If you don't utilize mana
, buy something else for mana such as tear/roa
, or have a mana management passive
you've got virtually no options for cooldown reductions. This is why champions like
buy morello/athene's even though they have extreme synergy with Seraph's Embrace and can stack it easily. This is why
builds morello even though it's absolutely possible to function with no mana regen other than your first 
Whether it's valid or not, it's been a fairly common argument that CDR has to be tacked onto mana regen items or it would be abused by manaless champions, most notably
. Now may be our only chance to rebalance CDR AP items so that it is possible for champion to get a healthy CDR item without the mana regen. I'd love to skillfully manage my mana and stack a tear efficiently and be rewarded for my investment, rather than it being garbage because the 20% CDR is infinitely more valuable. So please, consider this in the mage rework. CDR doesn't have to be associated with mana regen.
GIVE CDR?! IT. IS. AN. HOURGLASS! IT CAN STOP TIME! THIS IS THE CDR ITEM!
?
, but all if not most mages would rather use
for increased damage, even against squishies.