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 :

• Dragon Crucifix Spear
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• White Metal Hammer
• Father's Heart

  Reduce damage taken by 6%.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Wooden Repeating Crossbow
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• 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.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• White Guitar
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Flame Blade Raijinco
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Black Koi
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%