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 :

• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Death Wooden Coffin
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• Samurai Painted Wood

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.
• Sakura Rain Battle Umbrella
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Love Missile

  Additional 60 HP damage upon all attack.
• Santa Gift Bag

  Reduce damage taken by 30.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• Blizzard

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

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• Mini Goldfish
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.