Why isn't there an AP item that gives CDR and raw AP?

The whole idea behind this item is that right now we only have AP CDR items that give mana or have a niche passive with it. This item is meant just for the stats, having the 20% CDR and 100 AP is all this item is focused around and allows AP mages to start Rod Of Ages or Tear and still have that 20% CDR that other mages get from building Morellonomicon/Athenes as their first item.

The Item Build: Fiendish Codex + Needlessly Large Rod = 20% CDR + 100 AP + a bland passive (for example, the Phantom Dancer passive)

Just like all other Needlessly Large Rod items I think the price for this item should be at 3000 gold.

I personally would really like to see this item implemented into League. I would love to hear what you guys have to say about this item, I also don't have the greatest imagination when it comes to naming items or creating bland passives. If you guys got any ideas please write them below. Thank you.

Not that long ago I made a thread on the r/leagueoflegends subreddit with everything I just said above, the thread didn't get much recognition, but I was surprised to see Riot Xypherous chimed in. Here is the link for anyone who wants to read it: https://www.reddit.com/r/leagueoflegends/comments/3dji2q/why_isnt_there_an_ap_item_that_gives_cdr_and_raw/

Riot Xypherous replied to me by saying, "The answer is that either AP Manaless would be balanced around this item existing (and have all their cooldowns increased) or the item would be balanced around AP Manaless getting it first (and thus being incredibly expensive.) The passive that this item would have would need to tie into Mana or Regeneration in some way - or reward having a Mana Pool in order to get it off these binds - and thus would not be 'pure' AP/CDR in this respect. As for '+A Bland Passive' - explicitly then what you are doing is attempting to create the perfect pure stat efficiency line item. While this line of thought is understandably super popular - 'Why isn't there an item that exists that only gives me the stats that I want and that I don't have to pay anything for anything superflous' - he net results of having this item exist tends to be bad for the champions involved. It usually means that either the item will need to be incredibly weak (as it is inherently narrow and meant to only be good in the perfect setup of synergies) -or- that the people who use the item will have to be incredibly weak (as the majority of their power now lies in the items they buy - so in order to be balanced, they can't have it intrinsically on their kit - See: Every Brutalizer User)."

TL;DR: This item would be too strong on AP manaless champions, so to counter that you would need to make the passive have to tie in Mana or Mana Regeneration in some way.

So I now suggest a newer version of this item, this time it will be focused more on the identity of the item. It will have 20% CDR and 80 AP and it is still be centered on letting champions that build Rod of Ages or Tear first to have that 20% CDR that Morellonomicon and Athenes provides. And using the comments Riot Xypherous gave me, the item will have 100 Mana and a new unique passive.

The Item Build: Fiendish Codex + Blasting Wand = 20% + 80 AP + Unique Passive: +100 Mana + "While you have less than 50% total Mana you gain an additional 10 AP."

I'm not quite sure where to put the price on this item, but I would say its most likely around 2500 or 2700 gold.

Again, I just want to reiterate that I believe and item like this has so much potential. I just want to list a couple:

• Lissandra and Annie can now go Rod of Ages, new item, and boots of lucidity. Currently to get 40% CDR she has to go Rod of Ages, morello/athenes and boots of lucidity.
• Most AP mages, for example Orianna usually always starts either Morello/Athenes because right now if you decide to itemize Rod Of Ages or Tear, you just won't have that CDR you desperately need. This new item would be extremely useful in some match-ups where you wouldn't want to go the traditional Morello/Athenes, for example whenever a Zed is vsing an Orianna, often times the Ori player will build Tear for that extra shield that seraph's gives her, but she ends up missing that 20% CDR.

I really think that adding an item such as this would really give AP Mages way more options to build rather than the standard Morello/Athenes route. I really hope riot tries to implement an item such as the one I made up. I also do very much appreciate feedback and would love you hear what you guys have to say about this. I would also like to mention I still haven't come up with a name for this item and it would be cool to see what you guys could come up with. And thank you so much for reading my post.