7* Evolutions: Zergel, Rosetta and Elmedia

7-Demonic Blademaster Zergel-Dark*

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LS-Imperial Demon's Chant

80% boost to Atk, huge boost to BB Atk (100%), huge boost to BB gauge fill rate (50%), refills BB gauge every turn (3-4 BC per turn) and boosts BB gauge when damage has exceeded certain amount (10000 damage requirement, 8 BC recovery)

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ES-Imperial Tragedy

Adds Injury, Weaken effect to all allies attack for 3 turns during BB/SBB and massively fills BB gauge every turn (4-5 BC per turn)

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BB-Imperial Victory Stance

17 hit powerful (450% mod) Dark elemental attack on all enemies, boosts allies BB gauge fill rate (30%), critical hit rate (40%) for 3 turns and huge boost to all allies BB gauges (10 BCs)

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SBB-Demonic Battle Cry

20 hit powerful (500% mod) Dark elemental attack on all enemies, reduces BB gauge consumption (20%), refills all allies BB gauges when attacked (3-4 BC on hit) and huge boost to all allies BB Atk (250%) and Atk (150%) for 3 turns

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UBB-War Demon's Conquering

27 hit massive (1500% mod) Dark elemental attack on all enemies, total refill of all allies BB gauges (999 BCs per turn), boosts BB Atk (300%) and boosts critical hit damage (300%) for 3 turns

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7-Crystalline Bouquet Rosetta-Earth*

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LS-Radiant Deity's Aura

30% boost to max HP, huge boost to Spark damage (90%) and boosts BB gauge (1-2 BC on Spark) and recovers HP (200-250 HP on Spark) during Spark

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ES-Heavenly Memories

Refills BB gauge during Spark (1-2 BC on Spark) and adds critical hit rate boost during Spark effect to all allies attack for 3 turns (20% boost to critical hit rate during Spark, like Mare Bell)

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BB-Rosary Dance: Rosary Cyclone

40 hit powerful (400% mod) Earth elemental attack on all enemies, adds chance of reducing enemies Atk for 1 turn to all allies attack and adds chance of recovering BB gauge (1-2 BC on Spark, 80% chance), HP (150-200 HP on Spark, 80% chance) during Spark for 3 turns and removes status ailments

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SBB-Hidden Arts: Blooming Storm

30 hit powerful (450% mod) Earth elemental attack on all enemies, boosts Spark damage (120%), adds chance of refilling BB gauge during Spark (1-2 BC on Spark, 80% chance) and adds Poison, Injury, Paralysis and Curse effect (15% Poison/Injury, 10% Paralysis/Curse) to all allies attack for 3 turns

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UBB-Thorned Onslaught: Piercing Gale

50 hit massive (1000-1500%, damage reciporate to remaining HP) Earth elemental attack on all enemies, huge boost in all allies Spark damage (200%) and hugely boosts damage dealt against status ailment inflicted enemies (200%) for 3 turns

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7-Gleaming Priestess Elmedia-Light*

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LS-Oracle of Lore

50% boost to max HP and Rec, 5% reduction in all damage taken, recovers HP (1000 HP per turn), and high chance of recovering HP when attacked (50% chance, recovers 25% of damage taken)

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ES-Guided With a Purpose

Nullifies status ailments during BB/SBB and chance of reducing damage taken by 25% (25% chance)

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BB-Celestial Amore

Huge recovery of all allies HP (5000-8000 HP recovered, heal rate increases with consecutive uses), removes status ailments and boosts all allies max HP (10%)

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SBB-Miraculum Vitae (Latin: Miracle of Life)

Huge recovery of all allies BB gauges (15-20 BCs, refill rate increases with consecutive uses), recovers all allies HP (3000 per turn) and BB gauges (5 BC per turn), boosts all allies Def based on Rec (60% conversion) for 3 turns and boosts own max HP (30%, stacks with BB boost)

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UBB-"Go forth in peace."

Mitigates all damage taken to 1 for 2 turns, fully recovers all allies HP (99999 HP per turn) and BB gauges (999 BC per turn) and adds 50% chance of surviving a deadly attack once

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Edit: Zergel's LS changed to BB over time and BB gauge recovery when damage has exceeded certain amount, and his ES is changed BB over time

Edit #2: Zergel now has an Atk buff on SBB. How I forgot that is beyond me.

Edit #3: Rosetta's heal rate on Spark has been reduced.