I like how everyone is so fussed about how broken she is, but you do have to remember, she's going up against Kushina teams, Kakuzu team, and Hiruzen teams. Every ninja that has come out with a purpose is purposed to try to counter the mistake of the Kakuzu meta. So what if she is broken? She's another unit that you could play to counter a Kakuzu team with ease. And the myst isn't even broken at all, sooner or later, you can't revive without draining all of the chakra by the 5th or 6th use. And if the cooldown is every 3 turns, you'll be most likely killing her off or CCing her so she can't even heal off it.