Mid-game bosses like Extractor, Spherimorph, and Seymour Natus introduce more complex mechanics. Extractor requires hitting its core with ranged attacks (Wakka, Lulu) when it's vulnerable. Spherimorph changes elemental weaknesses, so use Scan and the correct elemental magic. Seymour Natus is a multi-stage fight; focus on dispelling his buffs and using elemental weaknesses. Keep your party's HP high and use Protect/Shell.
