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 :

• Mini Goldfish
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• Businessman Luggage
• S2 Ancient Bone Claw

  An ancient bone that emanates great power. Increases accuracy by 8%. Recovers 100 HP every turn.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Folding Paper Fan
• War Flag: Furinkazan
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Four-Point Shuriken
• Force of Taotie

  Reduce damage taken by 7%.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Carp Flag
• Golden Torch of Zeus

  Recover 150 HP every turn