Most of the main cooldown reduction items don't really have lots of ap, or if they do it's like stinger or something. What's the deal? I just want like a pure ap item with 15-20% CDR. like, 100 ap and 20% CDR. It would be awesome.
It's simple OP. AD champions rely on their skills and spells to do a lot of their damage. Their AAs aren't bursty and flashy enough for #LCSbigplays, therefore it makes perfect sense for their items to have more CDR on them. AP champions on the other hand mostly rely on their AAs to deal damage because they don't have enough mana regen to do anything else.
Hmmm.
10% - AD
Death's Dance
Youmuu's Ghostblade
Dervish Blade
Trinity Force
Enchantment: Warrior
20%+ - AD
Essence Reaver
Black Cleaver
10% - AP
Lich Bane
Banner of Command
Zeke's Harbringer
Will of the Ancients
Frost Queen's Claim
20% - AP
Nashor's Tooth
Athene's Unholy Grail
Morellonomicon
So I don't know where you got "most" from. I even left out other CD + AP items that are more "supporty" (Ardent Censer and Eye of the Watchers).
The only AD CDR item I can think of is Black cleaver. There are probably more, but none reach 20 like BC.
IBG and FH are not AD items (because they provide no AD. I don't care about spell blade, it isn't giving you more AD) they are armor items.
