AP Armor Items

Honestly Zhonyas isn't. I main AP mages and it really isn't fair how we get only 1 Armor Item. I Main Vladimir and it isn't fair how i lane against a Zed or Talon, and he can build Executioners Calling, Hexdrinker, Maw, Edge of Night, etc. And for AP all we have is really Seekers Armguard into Zhonyas. With this Midseason patch i just feel we could use more Armor items for AP mages.