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 :

• White Metal Hammer
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Civet Cat Tail
• Champion Cup!

  Ultimate prize for Champions.
• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Scroll: Grassland
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP 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
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Scroll: Double Head
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Red Koi
• Scroll: Rikugo
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Scroll: Terminated Rock
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Dragon Crucifix Spear
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Ghost Spider

  Reduce 72 HP damage taken.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.