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 :

• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Balloon Rabbit Doll

  Has 8% chance to convert damage taken to HP positively.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Dark World Hammer
• Mini Goldfish
• Shinobi Curse Battle Umbrella
• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• Dragon Crucifix Spear
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Ramen Shop Lantern
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• 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.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Ishiyama Lantern

  Reduce damage taken by 49.
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• S83 Four Wings

  Increase dodge rate by 8%.
• Flag: Dragon Symbol