When you will have Shadow Blade and Dagon you must go to roshan and lowered your hp, then go to any hero when you will be near to him use Shadow Blade go to him use your ultimate and fast dagon.
P.S This build doesn't work when your opponent is BloodSeeker
After this "Silent Kill" you can build your hero like this to carry character for late game: Manta, Skadi, Butterfly, Heart Of Tarrasque

This build was made by B-Shado And Lilineth.ltd
From Georgia