So far I know of two strategies.
Pick carries, beat him to death with damage items.
Pick people with burst damage (Lion, Lina) and use an etheral blade and lots of maxed out Dagons
Does anyone know which is better? Or if there's a different better one?
Note: Better can be defined as doing more damage per second, thus killing him faster (therefor this isn't a subjective question)
After searching some more I noticed this question but I'm hoping for a more exact answer with some numbers backing it up (I know it's lots of work, but maybe I'll be the one to do it and post it)