User blog comment:Makbloo/Patch 3.7 thoughts/@comment-6313572-20130515230611/@comment-7434112-20130516110238

http://leagueoflegends.wikia.com/wiki/List_of_champion%27s_Health_Regeneration

ZAC had the highest health regen (base and increase per level included)  at lvl 1, now its 7.55 I believe. And his health regen at 18 is below a loooooot of other champs.