User blog comment:RoznosicielCiast/The topic that has been discussed endless times - A fix for Lee Sin/@comment-3148314-20141227174257/@comment-3148314-20141228112706

I would try it with a bit of lifesteal and completely removed spell vamp

Since Lee can spam abilities in duels, I see this as one big source of his sustain. Life steal at least makes him dependent on auto attacks which and weak to items like Frozen Heart or Randuin's Omen.