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 :

• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Thorn hammer
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Blue Pattern Skis
• Scroll: Guren
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Ice Cystal Raijinco
• Vertical Light

  Reduce 15 HP damage taken.
• White Guitar
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• S83 Four Wings

  Increase dodge rate by 8%.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Falcon
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Mimosa
• Orange Kikyo Skis
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• White Metal Hammer
• Roasted Turkey

  Restore 20 HP every turn.