Question: how to transfer pokemon from black to bank?
Answer: Get your Pokémon Ready to Transfer. Put your copy of Pokémon Black into your Nintendo 3DS and open the game. ... 
Download/Update Pokémon Bank and Poké Transporter. If you don't have Pokémon Bank, go to Pokémon Bank in the eShop. ... 
Purchase Pokémon Bank Pass. ... 
Use Poké Transporter. ... 
Transfer Pokémon from Pokémon Bank to Pokémon X.