Side: Seven Sins (Part 2)

Sin Beast 4: Belphegor
Level 66, 100,000 HP. Weakness: Fire, Water, or Lightning. Belphegor absorbs damage from all attacks except its current weakness, which cycles through Fire, Water, and Lightning. Use Freelancer's Examine or Magnifying Glass to track its weakness. Magic-users are recommended. Default to 2 BP, then have magic-users cast three different elemental spells (e.g., Blizzaja, Thundaja, Firaja) in one turn to exploit the weakness. Consider using the Ghost state (Patissier's Ghostly Ganache) with MP Free in a Pinch and Wizard's Full Charge to conserve MP. Belphegor attacks with Hammer (single target), Diffusion Ray (party), or ultimate elemental spells. It can also use Sloth, which makes the party weak to all elements and dispels buffs. Group-cast Elemental Barrier to counter Sloth and other elemental attacks. Combine Elemental Barrier with Prescience to always go first. Belphegor may summon three Spheres, which have the same cyclic weakness and can use Body Slam or -aja spells. Group-cast -aja spells to damage Belphegor and Spheres simultaneously.

Sin Beast 5: Satan
Level 66, 100,000 HP. Weakness: Water, Demon. Satan attacks with Slash (single target) or Wrath (party berserk). Keep HP high and cast Status Barrier to prevent berserk. Satan can trigger Revenge, increasing its BP by 1 with each attack. At 1 BP, it uses Battle Blade (single target) and Two Blades (party). At 2 BP, it adds Three Blades (party). At 3 BP, it uses Four Blades (likely KO). To avoid this, cast Calm (Holy Magic) or use a combination of Winter Storm (stops BP recovery) and Undo HP (healing).

Sin Beast 6: Leviathan
Level 66, 100,000 HP. Weakness: Lightning, Aquatic. Leviathan has two forms: "High Altitude" (evades physical attacks) and "Magic Resist" (high magic defense). For "High Altitude," use magic spells. For "Magic Resist," equip Black Mage's Pierce Magic Defence ability. Leviathan's attacks include Bite (single target) and Blizzaja (party water damage). Equip the Iceflame Shield for the healer or group-cast Elemental Barrier. Leviathan uses Envy, which lowers defenses and dispels buffs; boost defenses back up (e.g., Performer's Grandship). "Magic Resist" Leviathan uses The Last Light (party damage) or Consume Life (random party damage, potential instant death). Use a Safety Ring or group-cast Status Barrier. Near half HP, Leviathan Brave twice for three attacks, then becomes immobile for two turns, offering a damage opportunity.

Sin Beast 7: Lucifer
Level 66, 100,000 HP. Weakness: Wind, Aerial. Lucifer counters physical hits with Two-Faced, so use magic. Attacks include Mow Down or Aeroja (party). Lucifer uses Pride to dispel buffs and maximize its stats. Use Exorcist's Purgation (with Prescience) to counter Pride. Lucifer may Brave to use Mow Down and Blade of Fury, then becomes immobile for one turn. Buff physical defense (e.g., Fencer stances, Special Moves) to mitigate damage from these attacks, as these buffs cannot be dispelled by Pride.