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 :

• 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.
• War Flag: World Peace
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Dark World Hammer
• Mini Octopus
• Christmas Bag

  Reduce damage taken by 10.
• Green Koi
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Spiked Blade

  Increases dodge and critical chance by 4%. Recovers 70 HP each turn.
• Father's Heart

  Reduce damage taken by 6%.
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• Chakra Message Stick
• Flame Soul Electric Guitar
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• Great Stinger

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Love Missile

  Additional 60 HP damage upon all attack.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.