This is for the slights that require friend cards (such as Goofy, Donald, and others). For example, you have Trinity Limit. It requires Goofy, Donald, and any attack card. What you do is wait until you get a Goofy or Donald friend card. When you get it, use L + R and the same for the attack card. When you get the last friend card you need, use Trinity Limit or the other slight that you're using. You get to keep your attack card because it's not the first card for the slight!