This is historically not a very popular move. Usually, Black tries to develop the c8-bishop before playing e6. This move, however, was played by Carlsen and Caruana, among others.
1. e2e4  1... c7c6  2. d2d4  2... d7d5  3. e4d5  3... c6d5  4. f1d3  4... b8c6  5. c2c3 