User blog comment:Emptylord/Season 3 - PBE Patch Notes/@comment-1490402-20121115213401/@comment-3974211-20121116170202

Actually, it's maximum health. ^_^

And yeah, I wrote that when Morello only mentioned the new bit but didn't say that the old bit was still there. But how doesn't it scale with AP? It increases the damage of your abilities by 20%... it increases your AP ratios by 20% (that's better than Rabadon's). Veigar's 100% AP scaling becomes 120% AP scaling, not even factoring the increased base damage.