Pit of Chains/New Trial of the Vengeful

Thresholds

 * Pre-emptive attack:
 * MS Eternal Mourning
 * MS Chained Impulse
 * Ends turn


 * 90%, after regular actions of the turn:
 * MS Eternal Mourning
 * MS Oblivion
 * Ends Turn


 * 60%, after regular actions of the turn:
 * MS Eternal Mourning
 * MS Oblivion
 * MS Curse of Chains on Highest ATK
 * Ends Turn


 * 30%, after regular actions of the turn:
 * MS Eternal Mourning
 * MS Oblivion
 * MS Curse of Chains on Highest ATK
 * Ends Turn

Attack Pattern 100% to 60%

 * Every 3n-1 turns (2, 5, etc): MS Endless Lament
 * Odd turns: MS Chain of Gold
 * MS Firaga or MS Blizzaga
 * Every 4n-1 turns (3, 7, etc): MS Dispel on Highest DEF (50%) or Random (50%)
 * Uses one of these, alternating per turn:
 * MS Pain on Highest DEF (50%) or Random (50%)
 * Four casts: MS Abyss Blow on Highest ATK
 * MS Thundaga or MS Waterga
 * Every 5n-1 turns (4, 9, etc): MS Silent Darkness
 * Normal Attacks
 * Every 3n-1 turns (2, 5, etc), if Anima has a debuff applied: MS Overstrain
 * Every 4n-1 turns (3, 7, etc): MS Chained Impulse
 * If MS Silent Darkness was used last turn: MS Bioga
 * Every 6n-1 turns (5, 11, etc): MS Soul-Sucking Chain
 * Every 5n-1 turns (4, 9, etc): MS Howl of Lament

Attack Pattern 60% to 50%

 * Every 3n-1 turns (2, 5, etc): MS Endless Lament
 * MS Chain of Gold
 * MS Firaga or MS Blizzaga
 * Every 4n-1 turns (3, 7, etc): MS Dispel on Highest DEF (50%) or Random (50%)
 * Uses one of these, alternating per turn:
 * MS Pain on Highest DEF (50%) or Random (50%)
 * Four casts: MS Abyss Blow on Highest ATK
 * MS Thundaga or MS Waterga
 * Every 4n-1 turns (3, 7, etc): MS Silent Darkness
 * Normal Attacks
 * Every 3n-1 turns (2, 5, etc), if Anima has a debuff applied: MS Overstrain
 * Every 4n-1 turns (3, 7, etc): MS Chained Impulse
 * If MS Silent Darkness was used last turn: MS Bioga
 * Every 6n-1 turns (5, 11, etc): MS Soul-Sucking Chain
 * Every 5n-1 turns (4, 9, etc): MS Howl of Lament

Attack Pattern 50% to 40%

 * Odd turns: MS Endless Lament
 * MS Chain of Gold
 * MS Firaga or MS Blizzaga
 * Every 4n-1 turns (3, 7, etc): MS Dispel on Highest DEF (50%) or Random (50%)
 * Uses one of these, alternating per turn:
 * MS Pain on Highest DEF (50%) or Random (50%)
 * Four casts: MS Abyss Blow on Highest ATK
 * MS Thundaga or MS Waterga
 * Every 4n-1 turns (3, 7, etc): MS Silent Darkness
 * Normal Attacks
 * Every 3n-1 turns (2, 5, etc), if Anima has a debuff applied: MS Overstrain
 * Every every 3n-1 turns (2, 5, etc): MS Chained Impulse
 * If MS Silent Darkness was used last turn: MS Bioga
 * Every 6n-1 turns (5, 11, etc): MS Soul-Sucking Chain
 * Every 5n-1 turns (4, 9, etc): MS Howl of Lament

Attack Pattern 40% to 0%

 * Odd turns: MS Endless Lament
 * MS Chain of Gold
 * MS Firaga or MS Blizzaga
 * Every 4n-1 turns (3, 7, etc): MS Dispel on Highest DEF (50%) or Random (50%)
 * Uses one of these, alternating per turn:
 * MS Pain on Highest DEF (50%) or Random (50%)
 * Four casts: MS Abyss Blow on Highest ATK
 * MS Thundaga or MS Waterga
 * Every 4n-1 turns (3, 7, etc): MS Silent Darkness
 * MS Chain of Gold
 * Normal Attacks
 * Every 3n-1 turns (2, 5, etc), if Anima has a debuff applied: MS Overstrain
 * Every every 3n-1 turns (2, 5, etc): MS Chained Impulse
 * If MS Silent Darkness was used last turn: MS Bioga
 * MS Endless Dark Lunacy
 * Every 6n-1 turns (5, 11, etc): MS Soul-Sucking Chain
 * Every 5n-1 turns (4, 9, etc): MS Howl of Lament

Tips

 * See testimonials and discussions.

Example Strategy

 * Example Team used for clearing with all missions:
 * Sieghard Provoker, Backup Breaker
 * Warrior of Light Lenna Healing, Immunity Buffs
 * Basch Magic Cover, Breaker
 * Warrior of Light Bartz Chainer
 * Aloha Lasswell Chainer

This team only uses five units, so you can fill the last slot in with whatever you want. Make sure someone has a source of light and lightning damage for missions.

Sieghard breaks on turn one while Basch covers, then Basch breaks each turn from there. Lenna provides immunity to the debuffs and does healing and dispels. Bartz and Lasswell chain for damage as their only role.