This is a kind of life steal crazy evelyn gaming build, just get in and kill like mad, it only works if you do a really good snowbolling game

You need to do the jungle like mad yours and theirs ( contrajungling)
move fast from camp to camp and while so just go to gank lines, never day just take assists and kills everywhere to keep your pocket full of money. with the elder lizard it will be easy to buy new stuff

you really need to stay all time at your best and keep farming and gank and all, if you lose the dinamic of the gold earning game move to another build ASAP