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 :

• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Dark Plate Twin Blades
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Fairy Wings

  Fairy wings that owned by a fairy
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Wooden Hammer
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Firefox Tail
• Businessman Luggage
• S15 Frozen Large Sword

  Increase 7% purify chance.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Screw Pattern Skis
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• Mini Scroll
• Jaws

  Ignore 4% targets dodge.
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Ferret Tail
• Scroll: Guren
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Merlins Magical book

  Increases attack damage 5%
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Wooden Repeating Crossbow
• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.