[Concept: New Item] Runaan's hurricane for On-hit AP Champions
http://i.imgur.com/4p7L3U8.png
New rework of runaan's hurricane on the PBE is good for AD marksmans (like Kalista). But there are few AP champions who build it for their AP AA AOE on-hit damage (like Teemo, Kayle or AP Varus). So there is my concept of runaan's hurricane for these champs..
+50% Attack Speed +40 Ability Power +5% Movement Speed
UNIQUE Passive: When basic attacking, bolts are fired at up to 2 enemies near the target. These bolts apply on-hit effects. UNIQUE Passive: Your basic attacks and bolts deal 15 (15% of Ability power) magic damage.
Cost: 3000
Built from: 
+ 
for example. That thing INCREASES your AP by 35% (And I think it used to be higher?). You have 
which can make any AP user a meaty champion (meaty in terms of stats). Then there's all the health and AP items which boost both AP and Health, sometimes even boosting armor and other effects. 
are just examples.
and 
are the only two I can think of and they don't even stack like 
which 
doesn't even come CLOSE to being as powerful as it (though it has a similar effect of an AoE, but within lightning).
is just over kill on AP champions who already have so much going for them. Especially giving them AP and Movement Speed. Even the regular 
and then your version of Runaan's which would stack with Nashor's for 30% AP. The items give him good AP and the Nashor's Tooth with your version of Runaan's for AP passive can deal massive damage on that Stacked Deck AA. The magic pen from 
(1200) + 
(435) + 165 combine cost = 3000 or even combine 365 to be 3200...
Along with the hurricane bolt passive, it may have a new passive (non Unique, i mean srsly I get sick of riot making the game unfun by being unable to stack items that guts fun offbuilds, not good for "diversity") where it
changes the recurve bow passive into something that Applies a psuedo onhit doing magic damage Scales with like 15% ABILITY POWER (so even if you stacked 6 or 3 of these it would be 90% or 45%) that is reduced by enemy MR, and Azir can be able to pass this into his soldiers (his W cast range isn't good anyways) and will benefit from spell vamp and lifesteal (for the sake that this is the only onhit item to do so, wit's end does not heal)
If you are still not liking the efficiency of the sustain, then it could be 665 combine cost and be total 3500g...
