Talk:VPBE/@comment-24474109-20150923124502/@comment-35229418-20150924181908

Well, I don't think mages would buy the Sightstone since Rabadon would just be better (again, the passives wouldn't stack). About toplaners buying it, 150 HP + 15% bonus HP and maybe 20 armor... One could just buy Deadman's Plate instead since it grants 30 more armor and the same HP that Sightstone would grant with 3000 bonus HP.

It's true that the % scaling isn't the best thing for supports, but it's supposed to be upgraded as a last choice. AP supports would have about 300 AP by that point and Tank supports would reach at least 1500 bonus HP easily, so it's not like they'd be wasted.