User blog comment:Sagee Prime/Sagee Prime's Nidalee rework... returns/@comment-6281696-20140612141306/@comment-6281696-20140612151845

I'd suggest having it work based landing hits, otherwise in cougar form she'l simply have it on constantly. You might as well just make it a permanent effect if it just procs on cast, given that she could just walk around swiping the air to maintain the buff.