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 :

• Merlins Magical book

  Increases attack damage 5%
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Jaws

  Ignore 4% targets dodge.
• Scroll: Tenku
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• Flame Blade Raijinco
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Yolanda Rescue First Aid Kit
• Straw Hat

  Increase dodge rate by 3%.
• Purple Dragon umbrella
• Ramen Shop Lantern
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Ninja Bag

  Increase healing power of scrolls by 20%.