User blog comment:Jens Ingels/Support Health Itematisation/@comment-4858812-20151113011124/@comment-8506165-20151119030214

" Let's give a example of a build from a AP lanebully in the current meta: Uhh... not really. Most AP supports combine their GP5 with Sightstone now for an extra slot (pre-preseason most didn't even bother upgrading Spellthief and just swapped it out late), and if you have Zeke's and Banner you're already tankier than the average AP mid so you don't need a pure defensive item, unless it's a team utility item that your team lacks, which is... kind of something supports have to deal with. I'd love to get Randuin's on Naut sometimes, but if no-one else has the Frozen Heart and they have a high attack speed champ no way I'm gonna skip it. But yeah, assuming that doesn't happen you've got room for two selfish AP items, often Liandry/Rylai which also both give you health, but even a Luden's or conceivably a hat, which leaves you squishier but still tankier than the average AP mid between the health/MR of Banner and the armor on Zeke's.
 *  Frost Queen's Claim
 *  Ionian Boots of Lucidity  //   Boots of Mobility  //   Sorcerer's Shoes
 * Ruby Sightstone
 * MR   Banner of Command  //  Locket of the Iron Solari
 * AR   Zeke's Harbinger  //   Frozen Heart
 * Defensive item"