But if it doesn't work, wouldn't it mean that we can't really revive anyone? If our ability depends on a different unit's to work, it wouldn't be fair since we're supposed to compete with them normally. No one dies for no reason, so there should always be something to heal.

And hmm. I thought it would be better to die twice but have a chance to be revived than to die once but for good, but am I missing something?