https://account.xbox.com/en-gb/gameclip/0ae2d858-3f07-4569-8bd1-aa0e49509021?gamerTag=borghaUK&scid=37770100-f9ae-4b80-9dad-7c1d0ec14469
...and that's done during a Thorn bounty, when getting killed is not a option.
I'm not a proper Crucible player, but I must say, I have a lot of fun playing it sometimes.
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Hungering Blade perk Restores Health when you kill an enemy with Arc blade. You can clearly see he takes damage but his Health Goes to full again.