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 :

• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Scroll: Taiin
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Ultimate Taiko

  Recover 120 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Curved Spear
• Four-Point Shuriken
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Scroll: Flying Phoenix
• Wooden Repeating Crossbow
• Writing Brush
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Python Scales Raijinco
• Scroll: Sun of Campaign
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Ichimoku Gourd
• 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.