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 :

• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• 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.
• Hanagara Dama

  Increase max. CP by 6%
• Scroll: Genbu
• Steel Frame Tail
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• Mini Scroll
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Flame Blade Raijinco
• Scroll: Rikugo
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Gold Wand

  Ignore 5% targets dodge.
• Scroll: Kinjutsu I
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Cupids Flying Envelop

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

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• Decorative Rope
• Flag: Dragon Symbol
• Businessman Luggage