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 :

• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Ukon Three Blades
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Black Metal Hammer
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Firefox Tail
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• Scroll: Kinjutsu I
• Sanmoku Gourd

  Reduce damage taken by 65.
• Fire Symbol Guitar
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Village Red Lantern
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Blue Wolf Tail
• Red Shell
• Scroll: Guren
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Father's Heart

  Reduce damage taken by 6%.
• Mini Scroll