Talk:Celestial Arts, Returning Water/@comment-24612605-20180802162831/@comment-4664494-20180805120002

Normally when auto-abilities are going to be triggered by another card specifically their "cast cost" they need to wait for the card to resolve and need to be present until the card resolves.

Sweeping ninja is kinda the same although she will trigger most likely after the cast she still needs to at least be present to verify the requirement for her ability is fulfilled. so I doubt she'll trigger off leaving the field from mizumikaeshi since for it be a cast it has to pay the cost first.

if you're talking about a case where she was destroyed but, not by this card's cast cost she will most likely trigger.

however, I'm going off this in the case she can immediately activate after the card's cast in the case she doesn't and needs the card to resolve than the second case will be the same as the first.