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 :

• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S57 Magatama Gunbai

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

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• Flag: Dragon Symbol
• Jaws

  Ignore 4% targets dodge.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• S83 Four Wings

  Increase dodge rate by 8%.
• Shinobi Curse Battle Umbrella
• Scroll: Kinjutsu I
• Puppet: Spider
• Black Metal Hammer
• Businessman Luggage
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Orange Kikyo Skis
• Folding Fan: Shino
• Raijin Raijinco