User blog comment:Sjjtitan2019/Itemization and Build Paths/@comment-11603965-20140106191340

I really hope they'll add a new for mages that don't have natural sustain. Will of the Ancients used to be really good, but it's pretty awful right now, since it got nerfed over and over. It did get buffed recently, but it's still way worse than it used to be. Spirit of the Spectral Wraith used to be popular for mids and tops that benefit from it, but it's a pretty useless item now since it provides next to no real combat stats.

But on the other hand, strong AP items often give a chunk of defensive stats as well, like Zhonya's, Rylai's, Athene's and Rod of Ages.