Some questions.

Taken from Kouli's guide; the titles are translated from the japanese version, but the personae needed are the same.

~Jack Brothers
Combo: Jack Frost+Jack Lantern
Attribute: Special
SP: 15%
Target: All Enemies
Accuracy: 100
Strength: 15
Critical: 0
Effect: Medium chance to inflict Down on all enemies

~Alderna/Aldernalisuvara
Combo: Parvati+Shiva
Attribute: Blaze
SP: 30%
Target: All Enemies
Accuracy: 99
Strength: 900
Critical: 0
Effect: Great blaze damage to all enemies

~Tricker
Combo: Loki+Susanoo
Attribute: Bad Status
SP: 15%
Target: All Enemies
Accuracy: 100
Strength: 15
Critical: 0
Effect: Inflict certain bad status to all enemies

~Infinity
Combo: Vishnu+Ananta
Attribute: Support
SP: 30%
Target: All Allies
Accuracy: 100
Strength: 15
Critical: 0
Effect: No damage for one turn for the party

~Valholl
Combo: Odin+Valkyrie
Attribute: Support
SP: 40%
Target: One Ally
Accuracy: 100
Strength: 0
Critical: 0
Effect: No damage for one turn for an ally but HP and MP becomes 1 afterward

~Midsummer Night's Dream
Combo: Oberon+Titania
Attribute: Special
SP: 15%
Target: Depends
Accuracy: 100
Strength: 15
Critical: 5
Random Effect: - Down all enemies
- Down all allies
- Down all enemies and allies
- Nothing
- Fully recover allies' HP and SP
- Fully recover enemies' HP and SP
- Fully recover allies and enemies' HP and SP
- Suffer Bad Status

~Armageddon
Combo: Lucis Ferre+Satan
Attribute: Almighty
SP: 100%
Target: All Enemies
Accuracy: 100
Strength: 9999
Critical: 0
Effect: 9999 damage to all enemies

~Cadenza
Combo: Orpheus+Apsaras
Attribute: Support
SP: 25%
Target: All Allies
Accuracy: 100
Strength: 50
Critical: 0
Effect: Evasion up for 3 turns and 50% HP recovery for all allies

~Crimson Slaughter
Combo: Siegfried+Ares
Attribute: Slash
SP: 15%
Target: All Enemies
Accuracy: 99
Strength: 320
Critical: 5
Effect: Great slash damage to all enemies

~Final Nude
Combo: Narcissus+Pixie
Attribute: Recovery
SP: 10%
Target: All Allies
Accuracy: 100
Strength: 15
Critical: 0
Effect: Full recovery for all allies but small chance to Fascinate all allies

~Nightmare Banquet
Combo: Incubus+Succubus
Attribute: Fascinate
SP: 15%
Target: All Allies and Enemies
Accuracy: 100
Strength: 15
Critical: 0
Effect: Supper high chance to Fascinate all allies and enemies

~King And I
Combo: King Frost+Jaaku Frost
Attribute: Freeze
SP: 15%
Target: All Enemies
Accuracy: 99
Strength: 149
Critical: 0
Effect: Great freeze damage to all enemies plus freeze effect

~Best Friend
Combo: Decarabia+Forneus
Attribute: Support
SP: 15%
Target: One Ally
Accuracy: 100
Strength: 15
Critical: 0
Effect: All kaja effects on one ally

~Darkness And Watchdog
Combo: Scathach+Cu Chulainn
Attribute: Hit
SP: 20%
Target: All Enemies
Accuracy: 99
Strength: 300
Critical: 5
Effect: Great hit damage to all enemies

~Thunder God's Dance
Combo: Take Mikazuchi+Thor
Attribute: Blitz
SP: 15%
Target: All Enemies
Accuracy: 99
Strength: 320
Critical: 1
Effect: Great blitz damage to all enemies plus 100% chance of shock effect

~Last Judge
Combo: Mitra+Metatron
Attribute: Almighty
SP: 30%
Target: All Enemies
Accuracy: 99
Strength: 800
Critical: 0
Effect: Great almighty damage to all enemies

~Raktapaksa
Combo: Garuda+Gurr
Attribute: Almighty
SP: 15%
Target: All Enemies
Accuracy: 100
Strength: 15
Critical: 0
Effect: High chance to inflict Down on all enemies plus Dekaja effect

~Justice
Combo: Angel+Arch Angel
Attribute: Light
SP: 30%
Target: All Enemies
Accuracy: 100
Strength: 50
Critical: 0
Effect: Divine attack that halves all enemies' HPs