Lane

Get Monster Rounds FIRST after that order doesn't really matter
Healing Rite optional.

Mid Game

In order
Jungle a lot here to get Glass ASAP once you have a few of these items and feel comfortable enough.

Glass Cannon

8===D

Late Game

At this point you should be good in fights, so take them
Order doesn't really matter much here
Juice your gun and sell T1 gun items if you don't have flex
Imbue ult with SC.

Giga Late

If the game is dragging and you have some cash to splash, get these to juice yourself up.

Ivy SKill build

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Ivy Build Description

Just rat inbetween lanes run up to them and fry them with your gun. Use your 2 selfishly and be sure to get in and out quick. USE YOUR ULT TO INITIATE! It's very good now!