Drow ranger is a good hero to surprise from the shadows. This is especially useful when she is accompanied by someone else. Instead of laning she should be roaming with someone like lina or brewmaster. The other player can stun someone who comes to retaliate or stun so drow can setup for a kill.
The main ability to do this with is Gust. Once you gust a surprised enemy than they have no ability to retaliate.
It is just difficult to do this in todays age