Hello, Can I use Rayquaza's GX ability with only 1 or 2 cards left in my deck? Or I need to discard exactly 3 cards to trigger effect? I am not sure if it will fall to "do as much as you can" or it when on ability is "if you do" you need to discard exactly 3 cards. I don'tk now if there si official ruling for it or how it works in Japan. Thank you!