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 :

• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• 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.
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Decorative Rope
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Toxic Village Poison Potion
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• Scroll: Fire and Earth
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% 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)
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Scroll: Flying Phoenix
• Champion Cup!

  Ultimate prize for Champions.
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• War Flag: Furinkazan
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• Turkey Tail
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Black Metal Hammer