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 :

• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Fairy Wings

  Fairy wings that owned by a fairy
• Large Wooden Hammer
• Force of Taotie

  Reduce damage taken by 7%.
• Scroll: Rikugo
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• Light Cry Raijinco
• Sakura Rain Battle Umbrella
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Christmas Bag

  Reduce damage taken by 10.
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Scroll: Yinyang Seal
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• Mirror of Thousand Hands
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.