User blog comment:Typhron/Something Something Quinn./@comment-6102571-20140629153548/@comment-60764-20140629234043

Helps her ult, her E, and the support of her W (the usefulness of each being in that order). You don't necessarily need it, but it does give you much more breathing room to make up for mistakes that could occur. Like CDR on Sivir (more mana, more ult uptime, more ability spam).