原文While you control Jocasta, if another player gains control of your commander and it deals combat damage to a player (including dealing combat damage to you), Jocasta's first triggered ability will trigger. However, if Jocasta is your commander and another player gains control of her, her dealing combat damage to a player won't cause that ability to trigger for her controller.
原文As Jocasta returns to the battlefield during the resolution of her last ability, you choose the player, planeswalker, or battle the creature Jocasta is attacking. It doesn't have to be the same player, planeswalker, or battle that your commander or any other attacking creatures are attacking.
原文Although Jocasta entered attacking, she was never declared as an attacking creature. Abilities that trigger whenever a creature attacks won't trigger when she enters attacking.