Talk:Twitch/@comment-60.229.121.204-20111016085940/@comment-212.117.1.33-20111016140803

The stacks lasts 6 seconds, every time you auto-attack you refresh it's duration and apply 1 stack (max 6 stacks). So, yeah, you can auto-attack someone 6 times, retreat, while they will take 360 true damage over 6 seconds  :)