You will need a few healing cards for this. During the battle with Ginyu in Goku’s body, take out Jeice or Burter (which ever one you didn’t kill) so that Ginyu is your only target. Try to get Ginyu weakned enough to do his body switch attack. If Ginyu successfully switches with one of your Z fighters, switch that warrior with the order command with another warrior (The warrior Ginyu switched with will become Ginyu). Like everyone else I know, I used Tien. Keep the warrior Ginyu switched with out for the rest of the battle. If you use Ginyu in battle, he has a fireball attack and his body switch. He can body switch with anyone including Frieza and Super Saiyan Vegeta.