>>96531578
this doesn’t explain it well so let me clarify

original timeline
>you stab the enemy in the heart
>his heart is pierced
>but maybe you also suffer some injuries, or even die after landing the strike

altered timeline
>[his heart is pierced]
>[you stab the enemy in the heart]
>nothing else happens

In other words, the only thing applies from the original timeline is your own attack. Anything bad that might have happened to you when landing that attack is discarded. Though, you do have to be able to land the attack.