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 :

• Falcon
• Mech of Wing

  Reduce damage taken by 10%.
• Mirror of Thousand Hands
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Folding Paper Fan
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Black Silver Electric Guitar
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Flame Soul Electric Guitar
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Scroll: Terminated Rock
• Water Energy Skis
• White Guitar
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Wooden Repeating Crossbow
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.