AP should have more options in itemization
Right now, most AP champions feel like they've been thrown under the bus due to nerfs to Zhonya's and then buffs to Maw of Malmortius, Mercurial Scimitar, and Armor Penetration.
That being said here are some items that should be added into the game.
-Moonflair Spellblade should be avaliable on SR, albeit stats lowered, due to the ridiculously good gold efficiency -An AP inverse of Maw, basically AP stats, activates when physical damage is taken below a certain point which will be looking like a serious defensive option for AP mages and AP Assassins alike, as well as more of an aggressive option for our AP tanks.
+80 AP +250 mana +25 Armor +10% CDR
Projected final cost 2800 - 3000 gold
Needlessly Large Rod + Glacial Shroud
Upon taking damage that would reduce maximum health below 30%, generates a shield that shields for 100 + 40% AP, (90 sec cooldown) and gives a flat 40 AP and 10% spell vamp bonus until out of combat.
-More Magic Penetration options, perhaps +10 magic pen on certain items like WotA or Morello