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 :

• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Gunbai: World Peace
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Mini Scroll
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Orange Koi
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• War Flag: World Peace
• Ninja Bag

  Increase healing power of scrolls by 20%.
• Shadow Twin Blades
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Shadow Umbrella
• Blue Cloud Umbrella

  Ignore 6% targets dodge.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Blue Shell