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 :

• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Scroll: Flying Phoenix
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• Scroll: Genbu
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Hide Guitar
• Large Wooden Hammer
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• Shadow Umbrella
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Champion Cup!

  Ultimate prize for Champions.
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• Three-stringed Lute Guitar
• Folding Paper Fan
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Red Shuriken Skis
• Golden Torch of Zeus

  Recover 150 HP every turn
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.