@charac
next time, edit a post, cause this was to much double posting in a way

the reason for Sorin is because 2 of her powers he wil get, including a natural recovery power he will find out as soon as he gets wounded, this recovery is similar to that of wolverine, even if death kills him, his body will heal and he will wake up again
the second power I will keep a secret, its not a power that keeps him alive but it is powerful enough to put him on par with Death when he is fully powered.

those 2 with his other abilities (the vacuum wind, and 1.5 other) will put him on place 1
he wont be invincible, but Death cant kill him, well Death can kill him, but he wakes up after a while.

I know it sounds powerful, but there are reasons, he wont be OP but I cant fully explain it here.