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 :

• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Roasted Turkey

  Restore 20 HP every turn.
• Christmas Bag

  Reduce damage taken by 10.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• 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.
• Businessman Luggage
• Shigu Twin Blades
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Smart Phone
• Three-stringed Lute Guitar
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Great Stinger

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.
• Hide Guitar
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Yatai Lantern
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Musashi Twin Blades
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.