This trick allows you to easily beat Ansem (Final) in Reverse/Rebirth mode. Before fighting the final boss, Ansem, you must first set the shortcut key to the first 0 Soul Eater card in your deck. Make sure that you have a decent HP (about 300) to withstand his attacks. Your goal is to engage in duel stance for the rest of the fight. Follow this process:

1. Activate duel stance. Duel stance is activated by playing a card with the same value as the card played by the opponent and then pressing Triangle.

2. Press Down (shortcut button) to select the 0 Soul Eater card.

3. Press X until you achieve seven successful breaks. This will activate the Barrage sleight that inflicts about one life bar damage (the damage varies based on your AP).

4. Reload your deck by pressing Up, then X.

5. Repeat the steps.

Note: Use the Oogie Boogie enemy card (Regen) if you are low on HP. Try to evade some of his attacks if possible. Also, make sure to break his sleights by using zero-valued cards.