All the items I see are life gain per kill, life gain per hit, or life gain per second. I haven't found one with life % per damage dealt.
Because they don't exist any more. You could still have some from pre ROS but life steal doesn't work. Blizz wanted us clenching our butt holes and praying for health globes while we murdered countless hordes of demons, rather then just blowing stuff up and never dying thanks to life steal.
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