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 :

• Civet Cat Tail
• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Scroll: Kochin
• Ghost Spider

  Reduce 72 HP damage taken.
• Purple Dragon umbrella
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• Turkey Tail
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Horror Scarecrow

  Increase attack damage by 5%. Reduce damage taken by 150.
• Mirror of Thousand Hands
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• White Guitar
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Scroll: Posion Attack
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Raccoon Tail
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• Yolanda Rescue First Aid Kit
• Three-stringed Lute Guitar
• Togatsuki Paper Fan

  Increase max. CP by 10%.