Talk:Zhonya's Hourglass/@comment-26274286-20150714151510/@comment-25447003-20150808165517

It's normal, nothing unusual. It's not a channelling ability, but a toggle so it can last as long as his mana allows.

And not only Swain but several other champions can do as well (with Revolver/WoTA they should heal also): Morgana Ult, Fiddlesticks ult, Kennen ult, Maokai ult. The tethers from Karma and LeBlanc also works if the enemy still in range (when Zhonya's active). Also Karthus and Amumu toggle. And Anivia's ult (but this one is "channeling" and therefore can be interrupted by hard CC).