Late game is simple, use [Pendulum] to spam your 2 bleed. Make sure to spam your [Pendulum] to lower your [Ult] cooldown even when your not in a fight.
Swaps (3)
Build [Bumba's Spear] if your in the Jungle.
Build [Heartseeker] first if your ahead on gold.
Build [Magi's] if your being dove or need to lock a target down.