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 :

• Blue Wolf Tail
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Mech of Wing

  Reduce damage taken by 10%.
• Carp Flag
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Wood Top
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Mace of Pandemonium

  Increases attack damage by 6%. Has 4% chance to convert damage taken to HP positively.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• Love Missile

  Additional 60 HP damage upon all attack.
• Falcon
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Force of Taotie

  Reduce damage taken by 7%.
• Deadwood Pipa