User blog comment:Hidden Sniper/Build Bulwark Every ARAM/@comment-4636093-20130522035255

Regen is one of the biggest priorities on ARAM, if you take harrass then there's no going back to the fountain to heal. It's why another huge item to build is Wota, people cast spells, wouldn't it be awesome to get health back for those? And the good thing is that spellvamp works on (almost) all ability damage, so your ADs can benefit too if someone builds it.