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 :

• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Swire Raijinco
• Scroll: Fire and Earth
• Blue Shell
• 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)
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• White Metal Hammer
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Straw Hat

  Increase dodge rate by 3%.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• 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.
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Golden Torch of Zeus

  Recover 150 HP every turn
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• Village Red Lantern
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Blue Pattern Skis