Insta-heals and CDR.

AP Vayne.

Well since Vayne has 0 benefit from AP, I guess deathfire grasp is the answer, pre-change ofc.

Mana regen stacking Katarina.

Now I don't need Soraka in my lane

AP support Vi

A Shield tons of cc and has a basic flash every 15 secounds, surrender at 20 boys...

AP Urgot

Dat shield, I guess...
Now, if only his acid hunters applied on-hit effects, malady and lich bane could make it interesting, to say the least.

AP Udyr

Want to clear jungle camps and be infinitely durable? Then AP udyr is for you! Now you have no need for janna!

ADC Nunu (With Ravenous Hydra!)

with all the slows a selfheal and AS up why wouldn't you go attack damage NuNu
AP Riven

LIche Bane into Death cap, they cant itemize MR because of your passive and ablites or Armour due to your liche bane.

AP quinn

before they even expect it your in bird form in their face ready to spam 1-6 keys and skill them down!

AD Gragas

Natural born bar fighter. A little drink from his casket and game over!

AD Lux