It's comes back as it was played again, so gets a second chance to live. And the other way is too hard in programming (evade 0 life creatures, Adrenaline and poison counters, mutants...)
The scrödinger effect is that: The cat is alive and death at the same time, but you can't say that is death or alive for sure. It's can't be measured, because measuring ruins everything. So the kitty can't be dead, because it's still living, but can't be alive, because it's died. So you can't "bring back" the cat from the gate, because it's not there.
I've written the Rewind only there to be clear.