Talk:Wooglet's Witchcap/@comment-174.48.8.63-20121019030210/@comment-3974211-20121019130642

That is not how unique passives work.

A unique passive only applies to identical items. Sheen's family, Tear's family, and Challice's family specify each other. Phage's family is a unique case as only the slow itself is unique... however, the chance to trigger the slow is not. Having two Phage's would mean have two separate 15% chances to slow.

All other uniques are item only (except the obvious one I'm probably forgetting, but this is the general rule). Brutalizer stacks with Youmuu's, Revolver stacks with Gunblade and Will of the Ancients.