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 :

• Wooden Hammer
• Flame Blade Raijinco
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Roasted Turkey

  Restore 20 HP every turn.
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• Heian-kyo Shamisen
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• S83 Four Wings

  Increase dodge rate by 8%.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• Christmas Pudding

  Recover 200 HP and 200 CP at the start of every turn but reduce agility by 10.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Orange Kikyo Skis
• Beast Mace
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Turkey Tail
• Red Koi
• Death Wooden Coffin