It'll heal him for 112% lifesteal off every target, and his allies for 50% damage off every target.
That is to say, if he reaches anyone to autoattack.
Ghost, Frozen Mallet and Scimitar
If you build Frozen Mallet, Scimitar, Hydra, boots, you'll only have 2 slots left for actual damage so you'll be less scary, but yeah, you'll reach people.
with max rank e and those items sion has like 300 AD.
Throw on PD for crits and a defensive item and gg!
You buy a Randuins Omen
Boots 2 are merc treads Phantom Dancer (MS) Mallet (+700 HP) Scimitar (MR and Uber Cleanse, AD and MS steroid) Hydra (lifesteal/active) Randuins gives you some much needed armor and a debuff for slowing down ranged kiting
You now have +165 AD (+35 from passive), some crit, some AS and more importantly you don't get blown up instantly anymore.