User blog comment:ClariS/Unofficial PBE Patch Notes (148)/@comment-4431813-20120915115339/@comment-4743916-20120918014127

Build frozen heart and you literally just gimped both her physical and true damage. People fail to realize how strong randuins and FH's 1200 range aura is against Vayne it's ridiculous. Also, you're assuming she'll have an easy time focusing one target in teamfights...