FFX's Lulu is one the best characters in-game, so let's look at her abilities, stats, weapons, and armor to prepare her for battle.
Final Fantasy X's Auron is one of the best party members, so let's look at his weapons, stats, armor, and abilities to power him up.
Everyone but Wakka has the Life spell and both Yuna and Lulu have over 700 MP and their Celestial weapons so they have the MP for the constant revival. Got the finishing blow with Ifrit's Hellfire which is nice. Two Fortune Spheres are better than one.Greater Sphere: Won this one with ...