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 :

• Drum: Ako
• Banana Back Item

  Banana Back Item
• Ritual Taiko
• Falcon
• Raijin Raijinco
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Large Wooden Hammer
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Red Shuriken Skis
• Neptunes Healing

  Amazing power from Neptune. 3% chance to convert damage taken to HP positively and recover 3% HP at the start of every turn.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Orange Koi
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Santa Gift Bag

  Reduce damage taken by 30.
• Toxic Village Poison Potion
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.