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 :

• Clouds And Mist Raijinco
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Swire Raijinco
• Businessman Luggage
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Shinobi Curse Battle Umbrella
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Minotaurs Horn

  Recover 350 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%.
• Four-Point Shuriken
• Blue Wolf Tail
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Kettle
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Three-stringed Lute Guitar
• Screw Pattern Skis
• Flag: Dragon Symbol
• Wooden Repeating Crossbow
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Dark Plate Twin Blades
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Scroll: Terminated Rock
• 2011 Carnival Jiegu

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