User blog comment:Obyvvvatel/Missing items/@comment-5077844-20130312200230/@comment-5077844-20130312200538

Okay, just ignore what I just wrote about spellvamp, until now I had no idea that it's about abilities and not magic dmg, my bad.

Which makes me think that you're actually right. Especially for Urgot (who's about spamming abilities, but having no ap scaling) this item would be a must-have.