You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• Butterfly Wings
• Shigu Twin Blades
• Merlins Magical book

  Increases attack damage 5%
• Smart Phone
• Hide Guitar
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Water Energy Skis
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.
• Dark Cry Raijinco
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Large Wooden Hammer
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Raijin Raijinco
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Cerberus's Flame

  80% chance to burn enemy who attack user - Reduce 3% HP for 2 turns.
• Force of Taotie

  Reduce damage taken by 7%.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Trident
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Scroll: Guren
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.