User blog comment:DeMi189/Muramana + AP builds./@comment-6003864-20130427193746/@comment-2094543-20130428204724

The scalings aren't especially good, but the huge amount of AP you get from a single item with Seraph's makes up for it. It falls off lategame, kinda like Sheen/Trinity, but it's quite significant in the mid game.

You can just get Seraph's AND Muramana for huge offensive potential, while RoA, Banshee's and Iceborn should make you sufficiently tanky.