for ranger, you can have leech not stops on full life
you can take belt: when life is full, leech apply to es, es no regen, es no recharge, es start at zero
https://pathofexile.gamepedia.com/Soul_Tetherand then you do selfdamage, to make es be bellow max 24/7
and then leech not stops on full life
http://www.youtube.com/watch?v=298ysvkREhU
Christ, I leave for a full year and come back and this guy still plays POE on 0fps with the shittiest builds imaginable.