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 :

• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Celestial Wood Raijinco
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Scroll: Yinyang Seal
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Yatai Lantern
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Folding Paper Fan
• War Flag: World Peace
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Force of Taotie

  Reduce damage taken by 7%.
• Dark Cry Raijinco
• GM Phone

  GM Phone
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• S26 Bashosen

  Increase 10% Combustion chance.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Scroll: Tenku
• Love Missile

  Additional 60 HP damage upon all attack.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Blue Wolf Tail
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.