After you get Soul Ring, go farm Ancient Creeps (biggest neutrals creeps on map - not roshan).

After you get Boots of Travel, keep farming lanes by teleporting to farming lane, use robots - ulty - port back to base - heal up and repeat.

If a fight start somewhere, just port there and help your team (at least with your rockets/ulty/rockets).

EVERY time when you have full health, use Soul Ring before your ulty, it will immediately rearm.