pretty sure that nancy said that the life mc/crescent is on is their last life though, not their last *free* life. that also makes me wonder about if either mc/crescent dies, will the other die too?
the third (though it's actually the second death, since it happened before the doomed timeline arc) was when the bomb went off in the past, before madame x reversed time to stop it from going off. it still did kill mc though, so it counted as a death