Its kinda funny how AD champ have easier access to Cooldown than mages.
The only mage item that gives 20% which can be used by all mages is
. The next item is highly niched and only a few ap champs use it
Compare that to

AD champs have great options when it comes to CD.

shoes.... i always need to get
to get max cdr...
mid with a
,
, and 
.
in the first reply.
1 shotting me as a squishy from half a screen with just 1 Targeted Auto ( not even the 4th one ) sure offers a fighting chance !
.
both are bursty champs who specialize at killing 1 target and in theory should be countered by Tanks and Juggs right ?
) so i know the edge AD champs have over AP champs.