Spirit Support Ivy

In lane you should play for securing and stealing souls, Ivy has a precise and fast weapon, so she's good at it
Later you make sure to stay behind your fellas, or you won't be having a good time with Rescue Beam (best item in the game)
When there's the possibility, try to flank or gank with your ult to secure kills
When you'll have all the Early Game items, you can clear minion waves like it's nothing.

Generally in this order, left to right, get the actives when you feel like it (7.750 souls needed).

The core items of this build (16.250 souls needed).

Trust the process (24.250 souls needed).

I hope you get here (60.250 souls needed).

If you have to, buy anti-heal
You can either decide to buy Healbane and then Leech, or just buy Toxic Bullets in your remaining weapon slot.

These actives are good tools for setting up kills, disturbing the enemies, supporting your teammates, or even yourself
Read annotations or try them out!