This is a really difficult hero.
After lvl 10 you can be at the teamfights so dont miss them! (keep, and use your Ultimate Evolution for objectives) Try to copy assassin heroes. If there are a Jaina, she is the best choice, becouse of the chill combo.
For making some gifts for the enemies, take 2 pack of Toxic Nest to a blindspot on the map and sit on it. Only go out for ready places, never before! Watch out that you have to keep theese Nests on!
After lvl 20 you can make theese kind of surprises with Locust Nest as well.
And ofc try to get there (not in person) when someone fighting with the enemy!