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 :

• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• 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.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Yawata Magatama

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• Gunbai: World Peace
• Ninja Bag

  Increase healing power of scrolls by 20%.
• Dark Blade

  Increase 2% critical rate and ignore 2% of targets dodge.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Four-Point Shuriken
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• Red Shell
• Scroll: Double Head
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Basic Jounin Battle Gear
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Dark Plate Twin Blades
• Cupids Flying Envelop

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