User blog comment:NicknameMy/My suggested changes to Essence Reaver/@comment-25115166-20141017102356/@comment-25228021-20141017104040

It's not so much as that Riot doesn't like Spellvamp, it's that it could obviously be broken with single-target burst and basically would allow assassins to refill their lifebar as soon as they murder someone. Katarina would be awfully strong if spellvamp was so widespread, because with her resets, while she's killing people she also basically becomes unkillable if she so much as kills someone.